diff --git a/CHANGELOG.next.asciidoc b/CHANGELOG.next.asciidoc
index 5092128805bb..6094bfd1f42e 100644
--- a/CHANGELOG.next.asciidoc
+++ b/CHANGELOG.next.asciidoc
@@ -157,8 +157,10 @@ https://github.com/elastic/beats/compare/v8.2.0\...main[Check the HEAD diff]
 - Improve httpjson documentation for split processor. {pull}33473[33473]
 - Added separation of transform context object inside httpjson. Introduced new clause `.parent_last_response.*` {pull}33499[33499]
 - Cloud Foundry input uses server-side filtering when retrieving logs. {pull}33456[33456]
+- Disable "event normalization" processing for the aws-s3 input to reduce allocations. {pull}33673[33673]
 - Add Common Expression Language input. {pull}31233[31233]
 
+
 *Auditbeat*
 
 
diff --git a/x-pack/filebeat/input/awss3/input.go b/x-pack/filebeat/input/awss3/input.go
index e93ff4216938..b76df41deeac 100644
--- a/x-pack/filebeat/input/awss3/input.go
+++ b/x-pack/filebeat/input/awss3/input.go
@@ -112,6 +112,11 @@ func (in *s3Input) Run(inputContext v2.Context, pipeline beat.Pipeline) error {
 	client, err := pipeline.ConnectWith(beat.ClientConfig{
 		CloseRef:   inputContext.Cancelation,
 		ACKHandler: awscommon.NewEventACKHandler(),
+		Processing: beat.ProcessingConfig{
+			// This input only produces events with basic types so normalization
+			// is not required.
+			EventNormalization: boolPtr(false),
+		},
 	})
 	if err != nil {
 		return fmt.Errorf("failed to create pipeline client: %w", err)
@@ -368,3 +373,6 @@ func getProviderFromDomain(endpoint string, ProviderOverride string) string {
 	}
 	return "unknown"
 }
+
+// boolPtr returns a pointer to b.
+func boolPtr(b bool) *bool { return &b }