diff --git a/src/components/Calendar/Calendar.tsx b/src/components/Calendar/Calendar.tsx
index 46a8e5f..2f7a078 100644
--- a/src/components/Calendar/Calendar.tsx
+++ b/src/components/Calendar/Calendar.tsx
@@ -77,6 +77,10 @@ export default function CalendarApp({
     }
   }, [dispatch, tokens, userId]);
   const view = useAppSelector((state) => state.settings.view);
+  const userData = useAppSelector((state) => state.user.userData);
+  const hideDeclinedEvents = useAppSelector(
+    (state) => state.settings.hideDeclinedEvents
+  );
   const calendars = useAppSelector((state) => state.calendars.list);
   const tempcalendars = useAppSelector((state) => state.calendars.templist);
   const [selectedCalendars, setSelectedCalendars] = useState<string[]>([]);
@@ -221,7 +225,9 @@ export default function CalendarApp({
 
   let filteredEvents: CalendarEvent[] = extractEvents(
     selectedCalendars,
-    calendars || {}
+    calendars || {},
+    userData?.email,
+    hideDeclinedEvents
   );
 
   const tempCalendarIds = useMemo(
@@ -231,7 +237,9 @@ export default function CalendarApp({
 
   let filteredTempEvents: CalendarEvent[] = extractEvents(
     tempCalendarIds,
-    tempcalendars || {}
+    tempcalendars || {},
+    userData?.email,
+    hideDeclinedEvents
   );
 
   const sortedSelectedCalendars = useMemo(
diff --git a/src/components/Calendar/utils/calendarUtils.ts b/src/components/Calendar/utils/calendarUtils.ts
index 6113053..b66ecde 100644
--- a/src/components/Calendar/utils/calendarUtils.ts
+++ b/src/components/Calendar/utils/calendarUtils.ts
@@ -138,21 +138,30 @@ export const eventToFullCalendarFormat = (
 
 export const extractEvents = (
   selectedCalendars: string[],
-  calendars: Record<string, Calendars>
+  calendars: Record<string, Calendars>,
+  userAddress?: string,
+  hideDeclinedEvents?: boolean | null
 ) => {
-  let filteredEvents: CalendarEvent[] = [];
+  const allEvents: CalendarEvent[] = [];
+
   selectedCalendars.forEach((id) => {
-    if (calendars[id] && calendars[id].events) {
-      filteredEvents = filteredEvents
-        .concat(
-          Object.keys(calendars[id].events).map(
-            (eventid) => calendars[id].events[eventid]
-          )
-        )
-        .filter((event) => !(event.status === "CANCELLED"));
+    const calendar = calendars[id];
+    if (calendar?.events) {
+      allEvents.push(...Object.values(calendar.events));
     }
   });
-  return filteredEvents;
+
+  return allEvents
+    .filter((event) => event.status !== "CANCELLED")
+    .filter(
+      (event) =>
+        !(
+          hideDeclinedEvents &&
+          event.attendee?.some(
+            (a) => a.cal_address === userAddress && a.partstat === "DECLINED"
+          )
+        )
+    );
 };
 
 export const updateCalsDetails = (
diff --git a/src/features/Settings/SettingsPage.tsx b/src/features/Settings/SettingsPage.tsx
index a3fcf50..61324ac 100644
--- a/src/features/Settings/SettingsPage.tsx
+++ b/src/features/Settings/SettingsPage.tsx
@@ -25,6 +25,7 @@ import {
   setLanguage as setSettingsLanguage,
   setTimeZone as setSettingsTimeZone,
   setIsBrowserDefaultTimeZone,
+  setHideDeclinedEvents,
 } from "./SettingsSlice";
 import {
   updateUserConfigurationsAsync,
@@ -68,6 +69,11 @@ export default function SettingsPage() {
   const alarmEmailsEnabled = useAppSelector(
     (state) => state.user?.alarmEmailsEnabled ?? true
   );
+
+  const hideDeclinedEvents = useAppSelector(
+    (state) => state.settings?.hideDeclinedEvents
+  );
+
   const [activeNavItem, setActiveNavItem] =
     useState<SidebarNavItem>("settings");
   const [activeSettingsSubTab, setActiveSettingsSubTab] =
@@ -75,6 +81,8 @@ export default function SettingsPage() {
   const [languageErrorOpen, setLanguageErrorOpen] = useState(false);
   const [timeZoneErrorOpen, setTimeZoneErrorOpen] = useState(false);
   const [alarmEmailsErrorOpen, setAlarmEmailsErrorOpen] = useState(false);
+  const [hideDeclinedEventsErrorOpen, setHideDeclinedEventsErrorOpen] =
+    useState(false);
 
   const handleBackClick = () => {
     dispatch(setView("calendar"));
@@ -168,6 +176,27 @@ export default function SettingsPage() {
     setTimeZoneErrorOpen(false);
   };
 
+  const handleHideDeclinedEvents = (doHideDeclinedEvents: boolean) => {
+    // Optimistic update - update UI immediately
+    dispatch(setHideDeclinedEvents(doHideDeclinedEvents));
+
+    // Call API in background, don't wait for it
+    dispatch(
+      updateUserConfigurationsAsync({
+        hideDeclinedEvents: doHideDeclinedEvents,
+      })
+    )
+      .unwrap()
+      .catch((error) => {
+        console.error("Failed to update hide declined event:", error);
+        dispatch(setHideDeclinedEvents(!doHideDeclinedEvents));
+        setHideDeclinedEventsErrorOpen(true);
+      });
+  };
+  const handleHideDeclinedEventsErrorClose = () => {
+    setHideDeclinedEventsErrorOpen(false);
+  };
+
   const handleAlarmEmailsToggle = (
     event: React.ChangeEvent<HTMLInputElement>
   ) => {
@@ -315,6 +344,38 @@ export default function SettingsPage() {
                       </FormControl>
                     </Box>
                   </Box>
+                  <Box>
+                    <Typography variant="h6" sx={{ mb: 1 }}>
+                      {t("settings.calAndEvent")}
+                    </Typography>
+                    <Box
+                      sx={{
+                        mb: 6,
+                      }}
+                    >
+                      <FormControl size="small" sx={{ minWidth: 500 }}>
+                        <FormControlLabel
+                          control={
+                            <Switch
+                              checked={Boolean(!hideDeclinedEvents)}
+                              onChange={() =>
+                                handleHideDeclinedEvents(!hideDeclinedEvents)
+                              }
+                              aria-label={t("settings.showDeclinedEvent")}
+                            />
+                          }
+                          label={t("settings.showDeclinedEvent")}
+                          labelPlacement="start"
+                          sx={{
+                            minWidth: 400,
+                            justifyContent: "space-between",
+                            marginLeft: 0,
+                            mb: 2,
+                          }}
+                        />
+                      </FormControl>
+                    </Box>
+                  </Box>
                 </Box>
               )}
               {activeSettingsSubTab === "notifications" && (
@@ -381,6 +442,13 @@ export default function SettingsPage() {
           "Failed to update email notifications setting"
         }
       />
+
+      <Snackbar
+        open={hideDeclinedEventsErrorOpen}
+        autoHideDuration={4000}
+        onClose={handleHideDeclinedEventsErrorClose}
+        message={t("settings.hideDeclinedEventsUpdateError")}
+      />
     </main>
   );
 }
diff --git a/src/features/Settings/SettingsSlice.ts b/src/features/Settings/SettingsSlice.ts
index 3a036af..ceeef47 100644
--- a/src/features/Settings/SettingsSlice.ts
+++ b/src/features/Settings/SettingsSlice.ts
@@ -6,6 +6,7 @@ export interface SettingsState {
   language: string;
   timeZone: string | null; // Allow null to represent browser default
   isBrowserDefaultTimeZone: boolean;
+  hideDeclinedEvents: boolean | null;
   view: "calendar" | "settings" | "search";
 }
 
@@ -21,6 +22,7 @@ const initialState: SettingsState = {
   language: defaultLang,
   timeZone: defaultTimeZone,
   isBrowserDefaultTimeZone: defaultTimeZone === null,
+  hideDeclinedEvents: null,
   view: "calendar",
 };
 
@@ -39,6 +41,9 @@ export const settingsSlice = createSlice({
     setIsBrowserDefaultTimeZone: (state, action: PayloadAction<boolean>) => {
       state.isBrowserDefaultTimeZone = action.payload;
     },
+    setHideDeclinedEvents: (state, action: PayloadAction<boolean | null>) => {
+      state.hideDeclinedEvents = action.payload;
+    },
     setView: (
       state,
       action: PayloadAction<"calendar" | "settings" | "search">
@@ -65,6 +70,16 @@ export const settingsSlice = createSlice({
         state.isBrowserDefaultTimeZone = true;
         localStorage.setItem("timeZone", browserDefaultTimeZone);
       }
+      const esnCalendarModule = action.payload.configurations?.modules?.find(
+        (module: any) => module.name === "linagora.esn.calendar"
+      );
+      const hideDeclinedEventsConfig = esnCalendarModule?.configurations?.find(
+        (config: any) => config.name === "hideDeclinedEvents"
+      );
+      state.hideDeclinedEvents =
+        typeof hideDeclinedEventsConfig?.value === "boolean"
+          ? hideDeclinedEventsConfig.value
+          : null;
     });
   },
 });
@@ -74,5 +89,6 @@ export const {
   setTimeZone,
   setView,
   setIsBrowserDefaultTimeZone,
+  setHideDeclinedEvents,
 } = settingsSlice.actions;
 export default settingsSlice.reducer;
diff --git a/src/features/User/userAPI.ts b/src/features/User/userAPI.ts
index 63fb28c..30de28f 100644
--- a/src/features/User/userAPI.ts
+++ b/src/features/User/userAPI.ts
@@ -40,6 +40,7 @@ export interface UserConfigurationUpdates {
   timezone?: string | null;
   previousConfig?: Record<string, any>;
   alarmEmails?: boolean;
+  hideDeclinedEvents?: boolean;
 }
 
 export async function updateUserConfigurations(
@@ -47,6 +48,7 @@ export async function updateUserConfigurations(
 ): Promise<Response | { status: number }> {
   const coreConfigs: Array<{ name: string; value: any }> = [];
   const calendarConfigs: Array<{ name: string; value: any }> = [];
+  const esnCalendarConfigs: Array<{ name: string; value: any }> = [];
 
   if (updates.language !== undefined) {
     coreConfigs.push({ name: "language", value: updates.language });
@@ -69,6 +71,12 @@ export async function updateUserConfigurations(
       value: updates.alarmEmails,
     });
   }
+  if (updates.hideDeclinedEvents !== undefined) {
+    esnCalendarConfigs.push({
+      name: "hideDeclinedEvents",
+      value: updates.hideDeclinedEvents,
+    });
+  }
 
   const modules: Array<{
     name: string;
@@ -88,6 +96,12 @@ export async function updateUserConfigurations(
       configurations: calendarConfigs,
     });
   }
+  if (esnCalendarConfigs.length > 0) {
+    modules.push({
+      name: "linagora.esn.calendar",
+      configurations: esnCalendarConfigs,
+    });
+  }
 
   if (modules.length === 0) {
     return Promise.resolve({ status: 204 });
diff --git a/src/locales/en.json b/src/locales/en.json
index 9adb7b5..74f5fe5 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -221,6 +221,9 @@
     "notifications.deliveryMethod": "Delivery method",
     "alarmEmailsUpdateError": "Failed to update email notifications setting",
     "sync.empty": "Sync settings coming soon",
+    "calAndEvent": "Calendar and events",
+    "showDeclinedEvent": "Show declined events",
+    "hideDeclinedEventsUpdateError": "Failed to update hide declined event.",
     "back": "Back to calendar"
   },
   "eventPreview": {
diff --git a/src/locales/fr.json b/src/locales/fr.json
index 17229e0..3a4e4e6 100644
--- a/src/locales/fr.json
+++ b/src/locales/fr.json
@@ -221,6 +221,9 @@
     "notifications.deliveryMethod": "Mode de réception",
     "alarmEmailsUpdateError": "Échec de la mise à jour du mode de notification par e-mail",
     "sync.empty": "Paramètres de synchronisation à venir",
+    "calAndEvent": "Calendrier et événements",
+    "showDeclinedEvent": "Afficher les événements déclinés",
+    "hideDeclinedEventsUpdateError": "Échec de la mise à jour du masquage des événements déclinés.",
     "back": "Retour au calendrier"
   },
   "eventPreview": {
diff --git a/src/locales/ru.json b/src/locales/ru.json
index bcc2b7c..c2f7bae 100644
--- a/src/locales/ru.json
+++ b/src/locales/ru.json
@@ -221,6 +221,9 @@
     "notifications.deliveryMethod": "Способ доставки",
     "alarmEmailsUpdateError": "Не удалось обновить настройки уведомлений по email",
     "sync.empty": "Настройки синхронизации скоро появятся",
+    "calAndEvent": "Календарь и мероприятия",
+    "showDeclinedEvent": "Показать отклонённые мероприятия",
+    "hideDeclinedEventsUpdateError": "Не удалось обновить скрытие отклонённых событий.",
     "back": "Вернуться к календарю"
   },
   "eventPreview": {
diff --git a/src/locales/vi.json b/src/locales/vi.json
index 30af6a8..7302e52 100644
--- a/src/locales/vi.json
+++ b/src/locales/vi.json
@@ -221,6 +221,9 @@
     "notifications.deliveryMethod": "Phương thức gửi",
     "alarmEmailsUpdateError": "Cập nhật cài đặt thông báo email thất bại",
     "sync.empty": "Cài đặt đồng bộ sắp có",
+    "calAndEvent": "Lịch và sự kiện",
+    "showDeclinedEvent": "Hiển thị các sự kiện đã từ chối",
+    "hideDeclinedEventsUpdateError": "Không cập nhật được các sự kiện ẩn bị từ chối.",
     "back": "Quay lại lịch"
   },
   "eventPreview": {