diff --git a/change/@fluentui-react-tag-picker-7980ff9b-a205-4ac9-a45d-b3043836e532.json b/change/@fluentui-react-tag-picker-7980ff9b-a205-4ac9-a45d-b3043836e532.json
new file mode 100644
index 00000000000000..1056aabaf54130
--- /dev/null
+++ b/change/@fluentui-react-tag-picker-7980ff9b-a205-4ac9-a45d-b3043836e532.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "chore(react-tag-picker): ensure no toggle behaviour when re-selecting already selected data",
+  "packageName": "@fluentui/react-tag-picker",
+  "email": "bernardo.sunderhus@gmail.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/react-components/react-tag-picker/library/src/components/TagPicker/useTagPicker.ts b/packages/react-components/react-tag-picker/library/src/components/TagPicker/useTagPicker.ts
index 6c658638188a40..ada2db9cf8cb22 100644
--- a/packages/react-components/react-tag-picker/library/src/components/TagPicker/useTagPicker.ts
+++ b/packages/react-components/react-tag-picker/library/src/components/TagPicker/useTagPicker.ts
@@ -1,5 +1,5 @@
 import * as React from 'react';
-import { useEventCallback, useId, useMergedRefs } from '@fluentui/react-utilities';
+import { elementContains, useEventCallback, useId, useMergedRefs } from '@fluentui/react-utilities';
 import type {
   TagPickerOnOpenChangeData,
   TagPickerOnOptionSelectData,
@@ -70,7 +70,6 @@ export const useTagPicker_unstable = (props: TagPickerProps): TagPickerState =>
   });
 
   const { trigger, popover } = childrenToTriggerAndPopover(props.children, noPopover);
-
   return {
     activeDescendantController,
     components: {},
@@ -98,7 +97,23 @@ export const useTagPicker_unstable = (props: TagPickerProps): TagPickerState =>
     getOptionsMatchingValue: comboboxState.getOptionsMatchingValue,
     registerOption: comboboxState.registerOption,
     selectedOptions: comboboxState.selectedOptions,
-    selectOption: comboboxState.selectOption,
+    selectOption: useEventCallback((event, data) => {
+      // if the option is already selected, invoke onOptionSelect callback with current selected values
+      // the combobox state would unselect the option, which is not the behavior expected
+      if (
+        comboboxState.selectedOptions.includes(data.value) &&
+        !elementContains(tagPickerGroupRef.current, event.target as Node)
+      ) {
+        props.onOptionSelect?.(event, {
+          selectedOptions: comboboxState.selectedOptions,
+          value: data.value,
+          type: event.type,
+          event,
+        } as TagPickerOnOptionSelectData);
+        return;
+      }
+      comboboxState.selectOption(event, data);
+    }),
     setHasFocus: comboboxState.setHasFocus,
     setOpen: comboboxState.setOpen,
     setValue: comboboxState.setValue,