diff --git a/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.spec.tsx b/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.spec.tsx
index f0d58c0b4..df35ddd99 100644
--- a/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.spec.tsx
+++ b/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.spec.tsx
@@ -131,8 +131,8 @@ const submissions: Submission[] = [
         challengeId: 'challenge-1',
         createdAt: '2026-07-01T10:00:00.000Z',
         createdBy: 'member-1',
-        id: 'system-submission',
-        memberHandle: 'system-user',
+        id: 'alpha-system-submission',
+        memberHandle: 'alpha',
         reviewSummation: [
             {
                 metadata: {
@@ -146,8 +146,8 @@ const submissions: Submission[] = [
         challengeId: 'challenge-1',
         createdAt: '2026-07-01T11:00:00.000Z',
         createdBy: 'member-2',
-        id: 'provisional-submission',
-        memberHandle: 'provisional-user',
+        id: 'bravo-provisional-submission',
+        memberHandle: 'bravo',
         reviewSummation: [
             {
                 metadata: {
@@ -161,8 +161,9 @@ const submissions: Submission[] = [
         challengeId: 'challenge-1',
         createdAt: '2026-07-01T12:00:00.000Z',
         createdBy: 'member-3',
-        id: 'example-submission',
-        memberHandle: 'example-user',
+        id: 'charlie-example-submission',
+        legacySubmissionId: 'legacy-charlie-id',
+        memberHandle: 'charlie',
         reviewSummation: [
             {
                 metadata: {
@@ -199,6 +200,43 @@ describe('SubmissionsSection', () => {
         mockFetchMembersByUserIds.mockResolvedValue([])
     })
 
+    it('filters submissions by current or legacy submission ID', () => {
+        render(
+            <SubmissionsSection
+                challenge={baseChallenge}
+                challengeId='challenge-1'
+            />,
+        )
+
+        fireEvent.change(screen.getByLabelText('Submission ID'), {
+            target: {
+                value: 'BRAVO',
+            },
+        })
+
+        expect(screen.getByText('bravo-provisional-submission'))
+            .toBeTruthy()
+        expect(screen.queryByText('alpha-system-submission'))
+            .toBeNull()
+        expect(screen.queryByText('charlie-example-submission'))
+            .toBeNull()
+        expect(screen.getByTestId('pagination-total').textContent)
+            .toBe('1')
+
+        fireEvent.change(screen.getByLabelText('Submission ID'), {
+            target: {
+                value: 'legacy-charlie',
+            },
+        })
+
+        expect(screen.getByText('charlie-example-submission'))
+            .toBeTruthy()
+        expect(screen.queryByText('alpha-system-submission'))
+            .toBeNull()
+        expect(screen.queryByText('bravo-provisional-submission'))
+            .toBeNull()
+    })
+
     it('filters marathon submissions by test type', () => {
         render(
             <SubmissionsSection
@@ -213,11 +251,11 @@ describe('SubmissionsSection', () => {
             },
         })
 
-        expect(screen.getByText('system-submission'))
+        expect(screen.getByText('alpha-system-submission'))
             .toBeTruthy()
-        expect(screen.queryByText('provisional-submission'))
+        expect(screen.queryByText('bravo-provisional-submission'))
             .toBeNull()
-        expect(screen.queryByText('example-submission'))
+        expect(screen.queryByText('charlie-example-submission'))
             .toBeNull()
         expect(screen.getByTestId('pagination-total').textContent)
             .toBe('1')
@@ -228,11 +266,11 @@ describe('SubmissionsSection', () => {
             },
         })
 
-        expect(screen.getByText('example-submission'))
+        expect(screen.getByText('charlie-example-submission'))
             .toBeTruthy()
-        expect(screen.queryByText('system-submission'))
+        expect(screen.queryByText('alpha-system-submission'))
             .toBeNull()
-        expect(screen.queryByText('provisional-submission'))
+        expect(screen.queryByText('bravo-provisional-submission'))
             .toBeNull()
     })
 })
diff --git a/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.tsx b/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.tsx
index f73961cd5..ace5be142 100644
--- a/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.tsx
+++ b/src/apps/work/src/pages/challenges/ChallengeEditorPage/components/SubmissionsSection/SubmissionsSection.tsx
@@ -58,6 +58,7 @@ interface FilterState {
     handle: string
     minScore: string
     startDate: string
+    submissionId: string
     testType: string
 }
 
@@ -332,6 +333,33 @@ function matchesFilterHandle(submission: Submission, handleFilter: string): bool
         .includes(normalizedHandleFilter)
 }
 
+/**
+ * Checks whether a submission matches the submission ID filter.
+ * @param submission Submission row being evaluated.
+ * @param submissionIdFilter Case-insensitive partial submission ID entered by the user.
+ * @returns True when the filter is empty or matches the submission's current or legacy ID.
+ * Used by `matchesFilters` before the submissions table is sorted and paginated.
+ */
+function matchesFilterSubmissionId(
+    submission: Submission,
+    submissionIdFilter: string,
+): boolean {
+    if (!submissionIdFilter) {
+        return true
+    }
+
+    const normalizedSubmissionIdFilter = normalizeValue(submissionIdFilter)
+        .toLowerCase()
+
+    return [
+        submission.id,
+        submission.legacySubmissionId,
+    ]
+        .some(submissionId => normalizeValue(submissionId)
+            .toLowerCase()
+            .includes(normalizedSubmissionIdFilter))
+}
+
 /**
  * Checks whether a submission matches the selected marathon test type.
  * @param submission Submission row being evaluated.
@@ -372,6 +400,10 @@ function matchesFilters(
         return false
     }
 
+    if (!matchesFilterSubmissionId(submission, filters.submissionId)) {
+        return false
+    }
+
     if (!matchesFilterDateRange(submission, filters.startDate, filters.endDate)) {
         return false
     }
@@ -398,6 +430,7 @@ export const SubmissionsSection: FC<SubmissionsSectionProps> = (
         handle: '',
         minScore: '',
         startDate: '',
+        submissionId: '',
         testType: '',
     })
     const [memberCache, setMemberCache] = useState<MemberCache>({})
@@ -682,6 +715,19 @@ export const SubmissionsSection: FC<SubmissionsSectionProps> = (
                     />
                 </label>
 
+                <label className={styles.filterLabel} htmlFor='submission-id-filter'>
+                    Submission ID
+                    <input
+                        className={styles.filterInput}
+                        id='submission-id-filter'
+                        name='submissionId'
+                        onChange={handleFilterChange}
+                        placeholder='Filter by submission ID'
+                        type='text'
+                        value={filters.submissionId}
+                    />
+                </label>
+
                 {isMarathonMatch
                     ? (
                         <label className={styles.filterLabel} htmlFor='submission-test-type-filter'>