diff --git a/src/ui/windows/contacts_tab.cpp b/src/ui/windows/contacts_tab.cpp
index 89b8926..90ba1d2 100644
--- a/src/ui/windows/contacts_tab.cpp
+++ b/src/ui/windows/contacts_tab.cpp
@@ -1310,8 +1310,15 @@ void RenderContactsTab(App* app)
             const float lblSz = lblF->LegacySize * sc;   // scaled label + address text
             const float adrSz = adrF->LegacySize * sc;
             bool rowDeleteRequested = false;   // per-row delete is deferred until after the loop
-            for (size_t vi = 0; vi < visibleRows.size(); ++vi) {
-                size_t i = visibleRows[vi];
+            // C183(c): clip the Cards/List rows. Fixed step = the Selectable height (rowH) plus the
+            // ItemSpacing.y pushed above (8*dp card mode, 0 list mode); each row restores the cursor to
+            // `afterRow`, so the step is exact and the scroll extent is unchanged. (Table mode is NOT
+            // clipped -- its rows can wrap.)
+            ImGuiListClipper rowClipper;
+            rowClipper.Begin(static_cast<int>(visibleRows.size()), rowH + (asCard ? 8.0f * dp : 0.0f));
+            while (rowClipper.Step()) {
+            for (int vi = rowClipper.DisplayStart; vi < rowClipper.DisplayEnd; ++vi) {
+                size_t i = visibleRows[static_cast<size_t>(vi)];
                 const auto& entry = book.entries()[i];
                 ImGui::PushID(static_cast<int>(i));
                 const bool selected = (s_selected_index == static_cast<int>(i));
@@ -1424,6 +1431,7 @@ void RenderContactsTab(App* app)
                 ImGui::SetCursorScreenPos(afterRow);   // undo the action buttons' cursor moves
                 ImGui::PopID();
             }
+            }   // while (rowClipper.Step())
             // Run the deferred per-row delete now that the loop over book.entries() has finished
             // (doDelete's two-stage confirm arms on the first click and removes on the second).
             if (rowDeleteRequested) doDelete();