diff --git a/src/components/focus_trap/__snapshots__/focus_trap.test.tsx.snap b/src/components/focus_trap/__snapshots__/focus_trap.test.tsx.snap
index 585aafd24f9d..7739a1b314d0 100644
--- a/src/components/focus_trap/__snapshots__/focus_trap.test.tsx.snap
+++ b/src/components/focus_trap/__snapshots__/focus_trap.test.tsx.snap
@@ -42,22 +42,22 @@ exports[`EuiFocusTrap can be disabled 1`] = `
 </div>
 `;
 
-exports[`EuiFocusTrap is rendered 1`] = `
-Array [
+exports[`EuiFocusTrap renders 1`] = `
+<div>
   <div
     data-focus-guard="true"
     style="width: 1px; height: 0px; padding: 0px; overflow: hidden; position: fixed; top: 1px; left: 1px;"
     tabindex="0"
-  />,
+  />
   <div
     data-focus-lock-disabled="false"
   >
     <div />
-  </div>,
+  </div>
   <div
     data-focus-guard="true"
     style="width: 1px; height: 0px; padding: 0px; overflow: hidden; position: fixed; top: 1px; left: 1px;"
     tabindex="0"
-  />,
-]
+  />
+</div>
 `;
diff --git a/src/components/focus_trap/focus_trap.spec.tsx b/src/components/focus_trap/focus_trap.spec.tsx
index 148a86b61930..eb3e68470ef4 100644
--- a/src/components/focus_trap/focus_trap.spec.tsx
+++ b/src/components/focus_trap/focus_trap.spec.tsx
@@ -11,9 +11,11 @@
 /// <reference types="../../../cypress/support" />
 
 import React, { ComponentType, useRef, useState } from 'react';
-import { EuiFocusTrap } from './focus_trap';
+
 import { EuiPortal } from '../portal';
 
+import { EuiFocusTrap } from './focus_trap';
+
 describe('EuiFocusTrap', () => {
   describe('focus', () => {
     it('is set on the first focusable element by default', () => {
@@ -359,6 +361,25 @@ describe('EuiFocusTrap', () => {
           expect(styles.getPropertyValue('padding-right')).to.equal('0px');
         });
       });
+
+      it('allows customizing gapMode via EuiProvider.componentDefaults', () => {
+        cy.mount(<ToggledFocusTrap />, {
+          providerProps: {
+            componentDefaults: { EuiFocusTrap: { gapMode: 'margin' } },
+          },
+        });
+        skipIfNoScrollbars();
+        cy.get('[data-test-subj="openFocusTrap"]').click();
+
+        cy.get('body').then(($body) => {
+          const styles = window.getComputedStyle($body[0]);
+
+          const margin = parseFloat(styles.getPropertyValue('margin-right'));
+          expect(margin).to.be.gt(0);
+
+          expect(styles.getPropertyValue('padding-right')).to.equal('0px');
+        });
+      });
     });
   });
 });
diff --git a/src/components/focus_trap/focus_trap.stories.tsx b/src/components/focus_trap/focus_trap.stories.tsx
index 3cf4971498b4..dca4e061921e 100644
--- a/src/components/focus_trap/focus_trap.stories.tsx
+++ b/src/components/focus_trap/focus_trap.stories.tsx
@@ -14,6 +14,7 @@ import { EuiFieldText } from '../form';
 import { EuiSpacer } from '../spacer';
 import { EuiPanel } from '../panel';
 
+import { EuiProvider } from '../provider';
 import { EuiFocusTrap, EuiFocusTrapProps } from './focus_trap';
 
 const meta: Meta<EuiFocusTrapProps> = {
@@ -21,9 +22,7 @@ const meta: Meta<EuiFocusTrapProps> = {
   // @ts-ignore This still works for Storybook controls, even though Typescript complains
   component: EuiFocusTrap,
   argTypes: {
-    crossFrame: {
-      control: { type: 'boolean' },
-    },
+    returnFocus: { type: 'boolean' },
   },
 };
 
@@ -39,7 +38,11 @@ const StatefulFocusTrap = (props: Partial<EuiFocusTrapProps>) => {
       </EuiButton>
       <EuiSpacer />
       <EuiPanel>
-        <EuiFocusTrap {...props} disabled={disabled}>
+        <EuiFocusTrap
+          {...props}
+          disabled={disabled}
+          onDeactivation={() => setDisabled(true)}
+        >
           Focus trap is currently {disabled ? 'disabled' : 'enabled'}
           <EuiFieldText />
           <EuiButton size="s">Button inside focus trap</EuiButton>
@@ -74,3 +77,16 @@ export const Iframe: Story = {
   ),
   args: { disabled: true, crossFrame: false },
 };
+
+export const EuiProviderComponentDefaults: Story = {
+  render: ({ ...args }) => (
+    <EuiProvider componentDefaults={{ EuiFocusTrap: { ...args } }}>
+      <StatefulFocusTrap disabled={true} />
+      <EuiSpacer />
+      This story is passing all controls and their arguments to EuiProvider's
+      `componentDefaults` instead of to EuiFocusTrap directly. It's primarily
+      useful for testing that configured defaults behave the same way as
+      individual props.
+    </EuiProvider>
+  ),
+};
diff --git a/src/components/focus_trap/focus_trap.test.tsx b/src/components/focus_trap/focus_trap.test.tsx
index e5baa0d94cdb..1f177dc3abc2 100644
--- a/src/components/focus_trap/focus_trap.test.tsx
+++ b/src/components/focus_trap/focus_trap.test.tsx
@@ -6,29 +6,26 @@
  * Side Public License, v 1.
  */
 
-import React, { EventHandler } from 'react';
-import { mount } from 'enzyme';
+import React from 'react';
 import { render } from '../../test/rtl';
-import { findTestSubject, takeMountedSnapshot } from '../../test';
+import { shouldRenderCustomStyles } from '../../test/internal';
 
-import { EuiEvent } from '../outside_click_detector/outside_click_detector';
 import { EuiFocusTrap } from './focus_trap';
-import { EuiPortal } from '../portal';
 
 describe('EuiFocusTrap', () => {
-  test('is rendered', () => {
-    const component = mount(
+  shouldRenderCustomStyles(<EuiFocusTrap>Test</EuiFocusTrap>);
+
+  it('renders', () => {
+    const { container } = render(
       <EuiFocusTrap>
         <div />
       </EuiFocusTrap>
     );
 
-    expect(
-      takeMountedSnapshot(component, { hasArrayOutput: true })
-    ).toMatchSnapshot();
+    expect(container).toMatchSnapshot();
   });
 
-  test('can be disabled', () => {
+  it('can be disabled', () => {
     const { container } = render(
       <EuiFocusTrap disabled>
         <div />
@@ -38,7 +35,7 @@ describe('EuiFocusTrap', () => {
     expect(container).toMatchSnapshot();
   });
 
-  test('accepts className and style', () => {
+  it('accepts className and style', () => {
     const { container } = render(
       <EuiFocusTrap className="testing" style={{ height: '100%' }}>
         <div />
@@ -50,8 +47,8 @@ describe('EuiFocusTrap', () => {
 
   describe('behavior', () => {
     describe('focus', () => {
-      test('is set on the first focusable element by default', () => {
-        const component = mount(
+      it('is set on the first focusable element by default', () => {
+        const { getByTestSubject } = render(
           <div>
             <input data-test-subj="outside" />
             <EuiFocusTrap>
@@ -63,13 +60,11 @@ describe('EuiFocusTrap', () => {
           </div>
         );
 
-        expect(findTestSubject(component, 'input').getDOMNode()).toBe(
-          document.activeElement
-        );
+        expect(getByTestSubject('input')).toBe(document.activeElement);
       });
 
-      test('will blur focus when negating `autoFocus`', () => {
-        mount(
+      it('will blur focus when negating `autoFocus`', () => {
+        render(
           <div>
             <input data-test-subj="outside" />
             <EuiFocusTrap autoFocus={false}>
@@ -84,8 +79,8 @@ describe('EuiFocusTrap', () => {
         expect(document.body).toBe(document.activeElement);
       });
 
-      test('is set on the element identified by `data-autofocus`', () => {
-        const component = mount(
+      it('is set on the element identified by `data-autofocus`', () => {
+        const { getByTestSubject } = render(
           <div>
             <input data-test-subj="outside" />
             <EuiFocusTrap>
@@ -97,155 +92,7 @@ describe('EuiFocusTrap', () => {
           </div>
         );
 
-        expect(findTestSubject(component, 'input2').getDOMNode()).toBe(
-          document.activeElement
-        );
-      });
-    });
-
-    // skipping because react-focus-on / react-focus-lock uses two handlers,
-    // one on the container to record what element was clicked and a second
-    // on the document, checking if the event target is the same on both
-    // because enzyme doesn't bubble the event, it is difficult to simulate
-    // the browser behaviour - we can revisit these tests when we have an
-    // actual browser environment
-    describe.skip('clickOutsideDisables', () => {
-      // enzyme doesn't mount the components into the global jsdom `document`
-      // but that's where the click detector listener is,
-      // pass the top-level mounted component's click event on to document
-      const triggerDocumentMouseDown: EventHandler<any> = (
-        e: React.MouseEvent
-      ) => {
-        const event = new Event('mousedown') as EuiEvent;
-        event.euiGeneratedBy = (
-          e.nativeEvent as unknown as EuiEvent
-        ).euiGeneratedBy;
-        document.dispatchEvent(event);
-      };
-
-      const triggerDocumentMouseUp: EventHandler<any> = (
-        e: React.MouseEvent
-      ) => {
-        const event = new Event('mousedown') as EuiEvent;
-        event.euiGeneratedBy = (
-          e.nativeEvent as unknown as EuiEvent
-        ).euiGeneratedBy;
-        document.dispatchEvent(event);
-      };
-
-      test('trap remains enabled when false', () => {
-        const component = mount(
-          <div
-            onMouseDown={triggerDocumentMouseDown}
-            onMouseUp={triggerDocumentMouseUp}
-          >
-            <EuiFocusTrap>
-              <div data-test-subj="container">
-                <input data-test-subj="input" />
-                <input data-test-subj="input2" />
-              </div>
-            </EuiFocusTrap>
-            <button data-test-subj="outside" />
-          </div>
-        );
-
-        // The existence of `data-focus-lock-disabled=false` indicates that the trap is enabled.
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-        findTestSubject(component, 'outside').simulate('mousedown');
-        findTestSubject(component, 'outside').simulate('mouseup');
-        // `react-focus-lock` relies on real DOM events to move focus about.
-        // Exposed attributes are the most consistent way to attain its state.
-        // See https://github.com/theKashey/react-focus-lock/blob/master/_tests/FocusLock.spec.js for the lib in use
-        // Trap remains enabled
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-      });
-
-      test('trap remains enabled after internal clicks', () => {
-        const component = mount(
-          <div
-            onMouseDown={triggerDocumentMouseDown}
-            onMouseUp={triggerDocumentMouseUp}
-          >
-            <EuiFocusTrap clickOutsideDisables>
-              <div data-test-subj="container">
-                <input data-test-subj="input" />
-                <input data-test-subj="input2" />
-              </div>
-            </EuiFocusTrap>
-            <button data-test-subj="outside" />
-          </div>
-        );
-
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-        findTestSubject(component, 'input2').simulate('mousedown');
-        findTestSubject(component, 'input2').simulate('mouseup');
-        // Trap remains enabled
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-      });
-
-      test('trap remains enabled after internal portal clicks', () => {
-        const component = mount(
-          <div
-            onMouseDown={triggerDocumentMouseDown}
-            onMouseUp={triggerDocumentMouseUp}
-          >
-            <EuiFocusTrap clickOutsideDisables>
-              <div data-test-subj="container">
-                <input data-test-subj="input" />
-                <input data-test-subj="input2" />
-                <EuiPortal>
-                  <input data-test-subj="input3" />
-                </EuiPortal>
-              </div>
-            </EuiFocusTrap>
-            <button data-test-subj="outside" />
-          </div>
-        );
-
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-        findTestSubject(component, 'input3').simulate('mousedown');
-        findTestSubject(component, 'input3').simulate('mouseup');
-        // Trap remains enabled
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-      });
-
-      test('trap becomes disabled on outside clicks', () => {
-        const component = mount(
-          <div
-            onMouseDown={triggerDocumentMouseDown}
-            onMouseUp={triggerDocumentMouseUp}
-          >
-            <EuiFocusTrap clickOutsideDisables>
-              <div data-test-subj="container">
-                <input data-test-subj="input" />
-                <input data-test-subj="input2" />
-              </div>
-            </EuiFocusTrap>
-            <button data-test-subj="outside" />
-          </div>
-        );
-
-        expect(
-          component.find('[data-focus-lock-disabled=false]').length
-        ).not.toBeLessThan(1);
-        findTestSubject(component, 'outside').simulate('mousedown');
-        findTestSubject(component, 'outside').simulate('mouseup');
-        // Trap becomes disabled
-        expect(component.find('[data-focus-lock-disabled=false]').length).toBe(
-          0
-        );
+        expect(getByTestSubject('input2')).toBe(document.activeElement);
       });
     });
   });
diff --git a/src/components/focus_trap/focus_trap.tsx b/src/components/focus_trap/focus_trap.tsx
index 337ea03938f5..52a68bca9ebb 100644
--- a/src/components/focus_trap/focus_trap.tsx
+++ b/src/components/focus_trap/focus_trap.tsx
@@ -6,17 +6,40 @@
  * Side Public License, v 1.
  */
 
-import React, { Component, CSSProperties } from 'react';
+import React, { Component, FunctionComponent, CSSProperties } from 'react';
 import { FocusOn } from 'react-focus-on';
 import { ReactFocusOnProps } from 'react-focus-on/dist/es5/types';
 import { RemoveScrollBar } from 'react-remove-scroll-bar';
 
 import { CommonProps } from '../common';
 import { findElementBySelectorOrRef, ElementTarget } from '../../services';
+import { useEuiComponentDefaults } from '../provider/component_defaults';
 
 export type FocusTarget = ElementTarget;
 
-interface EuiFocusTrapInterface {
+export type EuiFocusTrapProps = Omit<
+  ReactFocusOnProps,
+  // Inverted `disabled` prop used instead
+  | 'enabled'
+  // Omitted so that our props table & storybook actually register these props
+  | 'style'
+  | 'className'
+  | 'css'
+  // Props that differ from react-focus-on's default settings
+  | 'gapMode'
+  | 'crossFrame'
+  | 'scrollLock'
+  | 'noIsolation'
+  | 'returnFocus'
+> & {
+  // For some reason, Storybook doesn't register these props if they're Pick<>'d
+  className?: CommonProps['className'];
+  css?: CommonProps['css'];
+  style?: CSSProperties;
+  /**
+   * @default false
+   */
+  disabled?: boolean;
   /**
    * Whether `onClickOutside` should be called on mouseup instead of mousedown.
    * This flag can be used to prevent conflicts with outside toggle buttons by delaying the closing click callback.
@@ -24,32 +47,58 @@ interface EuiFocusTrapInterface {
   closeOnMouseup?: boolean;
   /**
    * Clicking outside the trap area will disable the trap
+   * @default false
    */
   clickOutsideDisables?: boolean;
   /**
    * Reference to element that will get focus when the trap is initiated
    */
   initialFocus?: FocusTarget;
-  style?: CSSProperties;
   /**
    * if `scrollLock` is set to true, the body's scrollbar width will be preserved on lock
    * via the `gapMode` CSS property. Depending on your custom CSS, you may prefer to use
    * `margin` instead of `padding`.
+   * @default padding
    */
   gapMode?: 'padding' | 'margin';
-  disabled?: boolean;
-}
-
-export interface EuiFocusTrapProps
-  extends CommonProps,
-    Omit<ReactFocusOnProps, 'enabled'>, // Inverted `disabled` prop used instead
-    EuiFocusTrapInterface {}
+  /**
+   * Configures focus trapping between iframes.
+   * By default, EuiFocusTrap allows focus to leave iframes and move to elements outside of it.
+   * Set to `true` if you want focus to remain trapped within the iframe.
+   * @default false
+   */
+  crossFrame?: ReactFocusOnProps['crossFrame'];
+  /**
+   * @default false
+   */
+  scrollLock?: ReactFocusOnProps['scrollLock'];
+  /**
+   * @default true
+   */
+  noIsolation?: ReactFocusOnProps['noIsolation'];
+  /**
+   * @default true
+   */
+  returnFocus?: ReactFocusOnProps['returnFocus'];
+};
+
+export const EuiFocusTrap: FunctionComponent<EuiFocusTrapProps> = ({
+  children,
+  ...props
+}) => {
+  const { EuiFocusTrap: defaults } = useEuiComponentDefaults();
+  return (
+    <EuiFocusTrapClass {...defaults} {...props}>
+      {children}
+    </EuiFocusTrapClass>
+  );
+};
 
 interface State {
   hasBeenDisabledByClick: boolean;
 }
 
-export class EuiFocusTrap extends Component<EuiFocusTrapProps, State> {
+class EuiFocusTrapClass extends Component<EuiFocusTrapProps, State> {
   static defaultProps = {
     clickOutsideDisables: false,
     disabled: false,
diff --git a/src/components/provider/component_defaults/component_defaults.tsx b/src/components/provider/component_defaults/component_defaults.tsx
index 954508b323c8..752fdbd8f3e4 100644
--- a/src/components/provider/component_defaults/component_defaults.tsx
+++ b/src/components/provider/component_defaults/component_defaults.tsx
@@ -9,16 +9,17 @@
 import React, { createContext, useContext, FunctionComponent } from 'react';
 
 import { EuiPortalProps } from '../../portal';
+import { EuiFocusTrapProps } from '../../focus_trap';
 
 export type EuiComponentDefaults = {
   /**
-   * Provide a global setting for EuiPortal's default insertion position.
+   * Provide a global configuration for EuiPortal's default insertion position.
    */
   EuiPortal?: { insert: EuiPortalProps['insert'] };
   /**
-   * TODO
+   * Provide a global configuration for EuiFocusTrap's `gapMode` and `crossFrame` props
    */
-  EuiFocusTrap?: unknown;
+  EuiFocusTrap?: Pick<EuiFocusTrapProps, 'gapMode' | 'crossFrame'>;
   /**
    * TODO
    */
diff --git a/upcoming_changelogs/6942.md b/upcoming_changelogs/6942.md
new file mode 100644
index 000000000000..1ae2f2c4d1a1
--- /dev/null
+++ b/upcoming_changelogs/6942.md
@@ -0,0 +1 @@
+- `EuiFocusTrap`'s `crossFrame` and `gapMode` props can now be configured globally via `EuiProvider.componentDefaults`