diff --git a/changelog.d/next/activity-hidden-order.fixed.md b/changelog.d/next/activity-hidden-order.fixed.md
new file mode 100644
index 0000000000..13a0e7b22f
--- /dev/null
+++ b/changelog.d/next/activity-hidden-order.fixed.md
@@ -0,0 +1 @@
+An Activity row for an order the Orders page does not list, such as a checkout cancelled before payment, now opens that order in a "From Activity" card with its state and short order ID.
diff --git a/src/components/templates/Marketplace/MarketplaceOrders.test.tsx b/src/components/templates/Marketplace/MarketplaceOrders.test.tsx
index 0ac9fb7686..bc19878d0f 100644
--- a/src/components/templates/Marketplace/MarketplaceOrders.test.tsx
+++ b/src/components/templates/Marketplace/MarketplaceOrders.test.tsx
@@ -812,3 +812,84 @@ describe('MarketplaceOrders seen checkpoint', () => {
     expect(markSeen).toHaveBeenCalledOnce();
   });
 });
+
+describe('MarketplaceOrders Activity link to an order no section lists', () => {
+  const scrollIntoView = vi.fn();
+
+  beforeEach(() => {
+    ordersState.currentUserPubky = CURRENT_USER;
+    ordersState.adapterMode = 'transaction-service';
+    ordersState.orders = [
+      orderView('paid', 'Sold paid boots', 'seller'),
+      orderView('cancelled', 'Unpaid sold lamp', 'seller', { receiptId: null }),
+    ];
+    scrollIntoView.mockReset();
+    Element.prototype.scrollIntoView = scrollIntoView;
+    vi.spyOn(CommerceController, 'markOrdersAttentionSeen').mockResolvedValue();
+  });
+
+  afterEach(() => {
+    window.history.replaceState(null, '', '/');
+  });
+
+  it('shows the linked order with its state and short ID, and scrolls to it', async () => {
+    window.history.replaceState(null, '', '/marketplace/orders#order-test-unpaid-sold-lamp');
+
+    render(<MarketplaceOrders />);
+
+    const section = await screen.findByTestId('marketplace-linked-order');
+    expect(within(section).getByRole('heading', { name: 'From Activity' })).toBeInTheDocument();
+    expect(within(section).getByText('Your sale')).toBeInTheDocument();
+    expect(within(section).getByTestId('marketplace-linked-order-state')).toHaveTextContent('Cancelled before payment');
+    expect(within(section).getByText('Unpaid sold lamp × 1')).toBeInTheDocument();
+    expect(within(section).getByTestId('order-reference-label')).toHaveTextContent('Order test-unp');
+    const card = section.querySelector('[id="order-test-unpaid-sold-lamp"]');
+    expect(card).not.toBeNull();
+    await waitFor(() => expect(scrollIntoView).toHaveBeenCalled());
+    expect(scrollIntoView.mock.contexts.some((element) => element === card)).toBe(true);
+  });
+
+  it('keeps the unpaid cancel out of the page without an Activity link', () => {
+    render(<MarketplaceOrders />);
+
+    expect(screen.queryByTestId('marketplace-linked-order')).toBeNull();
+    expect(screen.queryByText(/Unpaid sold lamp/)).toBeNull();
+  });
+
+  it('does not duplicate an order another section already lists', async () => {
+    window.history.replaceState(null, '', '/marketplace/orders#order-test-sold-paid-boots');
+
+    render(<MarketplaceOrders />);
+
+    await waitFor(() => expect(screen.getByText('Sold paid boots × 1')).toBeInTheDocument());
+    expect(screen.queryByTestId('marketplace-linked-order')).toBeNull();
+    expect(screen.getAllByText('Sold paid boots × 1')).toHaveLength(1);
+  });
+
+  it('shows nothing for a linked order the signed-in account is not part of', async () => {
+    const foreign = orderView('cancelled', 'Foreign unpaid lamp', 'seller', {
+      receiptId: null,
+      buyerPubky: OTHER_USER,
+      sellerPubky: ORDER_FIXTURE_SELLER,
+    });
+    ordersState.orders = [orderView('paid', 'Sold paid boots', 'seller'), foreign];
+    window.history.replaceState(null, '', `/marketplace/orders#order-${foreign.order.id}`);
+
+    render(<MarketplaceOrders />);
+
+    await waitFor(() => expect(screen.getByText('Sold paid boots × 1')).toBeInTheDocument());
+    expect(screen.queryByTestId('marketplace-linked-order')).toBeNull();
+    expect(screen.queryByText(/Foreign unpaid lamp/)).toBeNull();
+    expect(document.getElementById(`order-${foreign.order.id}`)).toBeNull();
+  });
+
+  it('follows a hash change while the page is open', async () => {
+    render(<MarketplaceOrders />);
+    expect(screen.queryByTestId('marketplace-linked-order')).toBeNull();
+
+    window.history.replaceState(null, '', '/marketplace/orders#order-test-unpaid-sold-lamp');
+    window.dispatchEvent(new HashChangeEvent('hashchange'));
+
+    expect(await screen.findByTestId('marketplace-linked-order-state')).toHaveTextContent('Cancelled before payment');
+  });
+});
diff --git a/src/components/templates/Marketplace/MarketplaceOrders.tsx b/src/components/templates/Marketplace/MarketplaceOrders.tsx
index b61e797eda..c2c30936f5 100644
--- a/src/components/templates/Marketplace/MarketplaceOrders.tsx
+++ b/src/components/templates/Marketplace/MarketplaceOrders.tsx
@@ -30,6 +30,7 @@ import {
   readCheckoutHashOrderId,
   reservedWhileYouPayCopy,
   sellerReservationCopy,
+  unlistedOrderStateLabel,
 } from '@/libs/commerce/checkout-phase';
 import { formatCommerceMoney } from '@/libs/commerce/format';
 import { buyerVisiblePaymentStatus } from '@/libs/commerce/locks-payment';
@@ -77,6 +78,7 @@ export function MarketplaceOrders() {
   const tabListRef = useRef<HTMLDivElement>(null);
   const tabRefs = useRef<Partial<Record<OrdersTab, HTMLButtonElement | null>>>({});
   const redirectedHashRef = useRef<string | null>(null);
+  const [anchorOrderId, setAnchorOrderId] = useState<string | null>(null);
   const buyerCheckouts = orders.filter(({ order }) => isBuyerCheckoutInProgress(order, currentUserPubky));
   const sellerReservations = orders.filter(({ order }) => isSellerReservation(order, currentUserPubky));
   const abandonedCheckouts = orders.filter(({ order }) => isAbandonedCheckout(order, currentUserPubky));
@@ -85,12 +87,28 @@ export function MarketplaceOrders() {
   );
   const orderCounts = getOrderTabCounts(historyOrders, currentUserPubky);
   const visibleOrders = historyOrders.filter((view) => isOrderInTab(view, activeTab, currentUserPubky));
+  const listedOrderIds = new Set(
+    [...buyerCheckouts, ...sellerReservations, ...historyOrders, ...abandonedCheckouts].map(({ order }) => order.id),
+  );
+  const anchoredOrder =
+    anchorOrderId && !listedOrderIds.has(anchorOrderId)
+      ? (orders.find(({ order }) => order.id === anchorOrderId)?.order ?? null)
+      : null;
+  const linkedUnlistedOrder =
+    anchoredOrder && isOrderParticipant(anchoredOrder, currentUserPubky) ? anchoredOrder : null;
 
   useMarkMarketplaceOrdersSeen(!isLoading && !error && !needsSession);
 
+  useEffect(() => {
+    const readAnchor = () => setAnchorOrderId(readOrderAnchorId(window.location.hash));
+    readAnchor();
+    window.addEventListener('hashchange', readAnchor);
+    return () => window.removeEventListener('hashchange', readAnchor);
+  }, []);
+
   useEffect(() => {
     if (isLoading) return;
-    const anchorId = readOrderAnchorId(window.location.hash);
+    const anchorId = anchorOrderId;
     if (!anchorId) return;
     const view = orders.find((candidate) => candidate.order.id === anchorId);
     if (!view) return;
@@ -102,7 +120,7 @@ export function MarketplaceOrders() {
       return;
     }
     document.getElementById(orderAnchorId(anchorId))?.scrollIntoView({ block: 'center' });
-  }, [activeTab, currentUserPubky, isLoading, orders]);
+  }, [activeTab, anchorOrderId, currentUserPubky, isLoading, orders]);
 
   useEffect(() => {
     if (isLoading) return;
@@ -186,6 +204,34 @@ export function MarketplaceOrders() {
           </div>
         ) : orders.length ? (
           <>
+            {linkedUnlistedOrder && (
+              <div className="grid gap-3" data-testid="marketplace-linked-order">
+                <Heading level={2} size="sm" className="text-xl font-semibold">
+                  From Activity
+                </Heading>
+                <Card id={orderAnchorId(linkedUnlistedOrder.id)} className="scroll-mt-24 border py-4">
+                  <CardContent className="grid gap-2 px-5">
+                    <div className="flex flex-wrap gap-2">
+                      <Badge variant="outline" className="border-border/60 text-muted-foreground">
+                        {currentUserPubky === linkedUnlistedOrder.buyerPubky ? 'Your purchase' : 'Your sale'}
+                      </Badge>
+                      <Badge variant="secondary" data-testid="marketplace-linked-order-state">
+                        {unlistedOrderStateLabel(linkedUnlistedOrder)}
+                      </Badge>
+                    </div>
+                    {linkedUnlistedOrder.lines.map((line) => (
+                      <Typography key={line.listingAggregateId} as="p" className="font-semibold">
+                        {line.title} × {line.quantity}
+                      </Typography>
+                    ))}
+                    <MarketplaceOrderReference
+                      order={linkedUnlistedOrder}
+                      isBuyer={currentUserPubky === linkedUnlistedOrder.buyerPubky}
+                    />
+                  </CardContent>
+                </Card>
+              </div>
+            )}
             {buyerCheckouts.length > 0 && (
               <div className="grid gap-3" data-testid="marketplace-continue-checkout">
                 <Heading level={2} size="sm" className="text-xl font-semibold">
@@ -598,6 +644,10 @@ function isCurrentUserBuyer(order: MarketplaceOrder, currentUserPubky: string |
   return currentUserPubky !== null && order.buyerPubky === currentUserPubky;
 }
 
+function isOrderParticipant(order: MarketplaceOrder, currentUserPubky: string | null): boolean {
+  return isCurrentUserBuyer(order, currentUserPubky) || isCurrentUserSeller(order, currentUserPubky);
+}
+
 function isSellerAwaitingPayment(
   { order, payment }: Pick<MarketplaceOrderView, 'order' | 'payment'>,
   currentUserPubky: string | null,
diff --git a/src/libs/commerce/checkout-phase.test.ts b/src/libs/commerce/checkout-phase.test.ts
index f20b1bc141..a14dfbe3da 100644
--- a/src/libs/commerce/checkout-phase.test.ts
+++ b/src/libs/commerce/checkout-phase.test.ts
@@ -17,12 +17,21 @@ import {
   reservedWhileYouPayCopy,
   resolveCreatedCheckoutOrderIds,
   sellerReservationCopy,
+  unlistedOrderStateLabel,
 } from './checkout-phase';
 
 const BUYER = 'b'.repeat(52);
 const SELLER = 's'.repeat(52);
 
 describe('checkout-phase', () => {
+  it('names the state of an order no Orders section lists', () => {
+    expect(unlistedOrderStateLabel({ state: 'cancelled', receiptId: null })).toBe('Cancelled before payment');
+    expect(unlistedOrderStateLabel({ state: 'cancelled' })).toBe('Cancelled before payment');
+    expect(unlistedOrderStateLabel({ state: 'cancelled', receiptId: 'receipt-1' })).toBe('Cancelled');
+    expect(unlistedOrderStateLabel({ state: 'pending_payment' })).toBe('Awaiting payment');
+    expect(unlistedOrderStateLabel({ state: 'return_requested' })).toBe('Return requested');
+  });
+
   it('builds the checkout route without minting a second id', () => {
     expect(getMarketplaceCheckoutRoute()).toBe(MARKETPLACE_ROUTES.CHECKOUT);
     expect(getMarketplaceCheckoutRoute('018f47d2-6a27-7c23-a49d-000000000001')).toBe(
diff --git a/src/libs/commerce/checkout-phase.ts b/src/libs/commerce/checkout-phase.ts
index 7334217310..b885c19042 100644
--- a/src/libs/commerce/checkout-phase.ts
+++ b/src/libs/commerce/checkout-phase.ts
@@ -102,6 +102,14 @@ export function isSellerPaidOrder(
   );
 }
 
+/** State pill for an order an Activity link opens but no Orders section lists (a seller's unpaid cancel). */
+export function unlistedOrderStateLabel(order: { state: string; receiptId?: string | null }): string {
+  if (order.state === 'cancelled' && !hasReceipt(order)) return 'Cancelled before payment';
+  if (isPendingPaymentState(order.state)) return 'Awaiting payment';
+  const label = order.state.replaceAll('_', ' ');
+  return label.charAt(0).toUpperCase() + label.slice(1);
+}
+
 export function isBuyerCheckoutInProgress(
   order: { state: string; buyerPubky: string },
   buyerPubky: string | null,
diff --git a/src/test/vrt/marketplace/MarketplaceOrders.vrt.test.tsx b/src/test/vrt/marketplace/MarketplaceOrders.vrt.test.tsx
index d10da95ef7..3e551cafad 100644
--- a/src/test/vrt/marketplace/MarketplaceOrders.vrt.test.tsx
+++ b/src/test/vrt/marketplace/MarketplaceOrders.vrt.test.tsx
@@ -210,8 +210,32 @@ const fixtures = vi.hoisted(async () => {
     },
   ];
 
+  const sellerUnpaidCancelled = createOrderFixture('cancelled', {
+    id: '018f47d2-6a27-7c23-a49d-000000000741',
+    buyerPubky: 't'.repeat(52),
+    sellerPubky: ORDER_FIXTURE_BUYER,
+    receiptId: null,
+    lines: [
+      {
+        listingAggregateId: `listing:${ORDER_FIXTURE_BUYER}_lamp`,
+        listingRevision: 1,
+        contentHash: 'f'.repeat(64),
+        title: 'Brass desk lamp',
+        quantity: 1,
+        unitPrice: { amountMinor: 4_500, currency: 'USD', exponent: 2 },
+        subtotal: { amountMinor: 4_500, currency: 'USD', exponent: 2 },
+      },
+    ],
+  });
+  const activityLinkedUnlisted = [
+    ...sellerPendingPayment,
+    { order: sellerUnpaidCancelled, payment: null, receipt: null },
+  ];
+
   return {
     buyer: ORDER_FIXTURE_BUYER,
+    activityLinkedUnlisted,
+    activityLinkedUnlistedId: sellerUnpaidCancelled.id,
     everyOrderState: createOrderViewsForEveryState(),
     everyPaymentState: createOrderViewsForEveryPaymentState(),
     sellerNeedsAttention,
@@ -412,6 +436,31 @@ describe('Marketplace orders — visual regression', () => {
     await expect(expectVrtSurface('marketplace-orders')).toMatchScreenshot('orders-pending-payment-seller-desktop');
   });
 
+  for (const [label, viewport] of [
+    ['desktop', VRT_VIEWPORT_DESKTOP],
+    ['mobile', VRT_VIEWPORT_MOBILE],
+  ] as const) {
+    it(`renders an Activity-linked unpaid cancel the page does not list at ${label} viewport`, async () => {
+      const { activityLinkedUnlisted, activityLinkedUnlistedId } = await fixtures;
+      ordersState.orders = activityLinkedUnlisted;
+      ordersState.isLoading = false;
+      ordersState.error = null;
+      const previous = `${window.location.pathname}${window.location.search}${window.location.hash}`;
+      window.history.replaceState(null, '', `${window.location.pathname}#order-${activityLinkedUnlistedId}`);
+      try {
+        const screen = await renderForVRT(<MarketplaceOrders />, { viewport });
+        await expect.element(screen.getByRole('heading', { name: 'From Activity' })).toBeVisible();
+        await expect.element(screen.getByText('Cancelled before payment')).toBeVisible();
+        await expect.element(screen.getByText('Order 018f47d2').first()).toBeVisible();
+        await expect(expectVrtSurface('marketplace-orders')).toMatchScreenshot(
+          `orders-activity-linked-unlisted-${label}`,
+        );
+      } finally {
+        window.history.replaceState(null, '', previous);
+      }
+    });
+  }
+
   it('rejects an incorrect production surface marker', async () => {
     ordersState.orders = [];
     ordersState.isLoading = false;
diff --git a/src/test/vrt/marketplace/__screenshots__/MarketplaceOrders.vrt.test.tsx/Marketplace-orders---visual-regression-renders-an-Activity-linked-unpaid-cancel-the-page-does-not-list-at-desktop-viewport-1.png b/src/test/vrt/marketplace/__screenshots__/MarketplaceOrders.vrt.test.tsx/Marketplace-orders---visual-regression-renders-an-Activity-linked-unpaid-cancel-the-page-does-not-list-at-desktop-viewport-1.png
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