diff --git a/frontend/components/project/ProjectDrawer.vue b/frontend/components/project/ProjectDrawer.vue
index f8ba6fb..db3d837 100644
--- a/frontend/components/project/ProjectDrawer.vue
+++ b/frontend/components/project/ProjectDrawer.vue
@@ -87,10 +87,35 @@
             </MalioButton>
         </div>
 
+        <div v-if="props.project" class="mt-4 rounded border border-neutral-200 p-3">
+            <div class="flex items-center justify-between">
+                <div>
+                    <p class="text-xs uppercase text-neutral-500">{{ $t('workflows.title') }}</p>
+                    <p class="text-sm font-semibold text-neutral-900">{{ props.project.workflow?.name }}</p>
+                </div>
+                <MalioButton
+                    v-if="canManageWorkflows"
+                    type="button"
+                    icon-name="mdi:swap-horizontal"
+                    icon-position="left"
+                    button-class="w-auto px-3 py-1 text-xs"
+                    :label="$t('workflows.switchTitle')"
+                    @click="switchModalOpen = true"
+                />
+            </div>
+        </div>
+
         <ConfirmDeleteProjectModal
             v-model="confirmDeleteOpen"
             @confirm="handleDelete"
         />
+
+        <ProjectWorkflowSwitchModal
+            v-if="props.project"
+            v-model="switchModalOpen"
+            :project="props.project"
+            @switched="onWorkflowSwitched"
+        />
     </MalioDrawer>
 </template>
 
@@ -122,6 +147,15 @@ const isOpen = computed({
 const isEditing = computed(() => !!props.project)
 const isSubmitting = ref(false)
 const confirmDeleteOpen = ref(false)
+const switchModalOpen = ref(false)
+
+const auth = useAuthStore()
+const canManageWorkflows = computed(() => auth.user?.roles?.includes('ROLE_ADMIN') ?? false)
+
+function onWorkflowSwitched() {
+    emit('saved')
+    isOpen.value = false
+}
 
 const { listRepositories } = useGiteaService()
 const giteaRepos = ref<GiteaRepository[]>([])
diff --git a/frontend/components/project/ProjectWorkflowSwitchModal.vue b/frontend/components/project/ProjectWorkflowSwitchModal.vue
new file mode 100644
index 0000000..0fee759
--- /dev/null
+++ b/frontend/components/project/ProjectWorkflowSwitchModal.vue
@@ -0,0 +1,209 @@
+<template>
+    <Teleport v-if="modelValue" to="body">
+        <Transition name="modal" appear>
+            <div class="fixed inset-0 z-50 flex items-center justify-center">
+                <div class="absolute inset-0 bg-black/30" @click="close" />
+                <div class="relative z-10 w-full max-w-2xl rounded-lg bg-white p-6 shadow-xl">
+                    <h3 class="text-lg font-bold text-neutral-900">{{ $t('workflows.switchTitle') }}</h3>
+
+                    <div class="mt-5 flex flex-col gap-5">
+                        <MalioSelect
+                            v-model="targetWorkflowId"
+                            :options="targetOptions"
+                            :label="$t('workflows.switchTargetLabel')"
+                            empty-option-label="—"
+                            min-width="!w-full"
+                        />
+
+                        <div v-if="targetWorkflow" class="flex flex-col gap-2">
+                            <h4 class="text-sm font-bold text-neutral-900">{{ $t('workflows.switchMappingTitle') }}</h4>
+
+                            <table class="w-full text-sm">
+                                <thead>
+                                    <tr class="border-b text-left text-xs text-neutral-500">
+                                        <th class="py-2 pr-3">{{ $t('workflows.switchSourceCol') }}</th>
+                                        <th class="py-2 pr-3">{{ $t('workflows.switchTargetCol') }}</th>
+                                        <th class="py-2 text-right">{{ $t('workflows.switchTaskCountCol') }}</th>
+                                    </tr>
+                                </thead>
+                                <tbody>
+                                    <tr v-for="row in mappingRows" :key="row.sourceId ?? 'backlog'" class="border-b last:border-0">
+                                        <td class="py-2 pr-3">
+                                            <span
+                                                v-if="row.source"
+                                                class="mr-2 inline-block h-3 w-3 rounded-full align-middle"
+                                                :style="{ backgroundColor: row.source.color }"
+                                            />
+                                            {{ row.source?.label ?? $t('myTasks.backlog') }}
+                                            <span class="ml-1 text-xs text-neutral-400">
+                                                ({{ row.source?.category ? $t(`workflows.categories.${row.source.category}`) : '—' }})
+                                            </span>
+                                        </td>
+                                        <td class="py-2 pr-3">
+                                            <select
+                                                v-model="row.targetId"
+                                                class="h-9 w-full rounded border border-neutral-300 px-2 text-sm"
+                                            >
+                                                <option :value="null">{{ $t('workflows.switchToBacklog') }}</option>
+                                                <option
+                                                    v-for="s in targetWorkflow.statuses"
+                                                    :key="s.id"
+                                                    :value="s.id"
+                                                >
+                                                    {{ s.label }}
+                                                </option>
+                                            </select>
+                                        </td>
+                                        <td class="py-2 text-right text-neutral-700">{{ row.count }}</td>
+                                    </tr>
+                                </tbody>
+                            </table>
+                        </div>
+
+                        <div class="flex justify-end gap-3">
+                            <MalioButton
+                                variant="tertiary"
+                                label="Annuler"
+                                button-class="w-auto px-4"
+                                @click="close"
+                            />
+                            <MalioButton
+                                :label="$t('workflows.switchConfirm')"
+                                button-class="w-auto px-6"
+                                :disabled="!canConfirm || isSubmitting"
+                                @click="confirm"
+                            />
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </Transition>
+    </Teleport>
+</template>
+
+<script setup lang="ts">
+import type { Project } from '~/services/dto/project'
+import type { Task } from '~/services/dto/task'
+import type { Workflow } from '~/services/dto/workflow'
+import type { TaskStatus } from '~/services/dto/task-status'
+import { useWorkflowService } from '~/services/workflows'
+import { useTaskService } from '~/services/tasks'
+
+const props = defineProps<{
+    modelValue: boolean
+    project: Project
+}>()
+
+const emit = defineEmits<{
+    (e: 'update:modelValue', value: boolean): void
+    (e: 'switched'): void
+}>()
+
+const workflows = ref<Workflow[]>([])
+const projectTasks = ref<Task[]>([])
+const targetWorkflowId = ref<number | null>(null)
+const isSubmitting = ref(false)
+
+const workflowService = useWorkflowService()
+const taskService = useTaskService()
+
+const targetOptions = computed(() =>
+    workflows.value
+        .filter(w => w.id !== props.project.workflow.id)
+        .map(w => ({ label: w.name, value: w.id })),
+)
+
+const targetWorkflow = computed<Workflow | null>(() =>
+    workflows.value.find(w => w.id === targetWorkflowId.value) ?? null,
+)
+
+type Row = {
+    sourceId: number | null
+    source: TaskStatus | null
+    targetId: number | null
+    count: number
+}
+
+const mappingRows = ref<Row[]>([])
+
+function smartPrefill(source: TaskStatus | null, target: Workflow): number | null {
+    if (!source) return null
+    const sameCat = target.statuses
+        .filter(s => s.category === source.category)
+        .sort((a, b) => a.position - b.position)
+    return sameCat[0]?.id ?? null
+}
+
+watch(targetWorkflow, (tw) => {
+    if (!tw) {
+        mappingRows.value = []
+        return
+    }
+    const usedStatusIds = new Map<number | null, number>()
+    for (const t of projectTasks.value) {
+        const key = t.status?.id ?? null
+        usedStatusIds.set(key, (usedStatusIds.get(key) ?? 0) + 1)
+    }
+    mappingRows.value = [...usedStatusIds.entries()].map(([sourceId, count]) => {
+        const source = props.project.workflow.statuses.find(s => s.id === sourceId) ?? null
+        return {
+            sourceId,
+            source,
+            targetId: smartPrefill(source, tw),
+            count,
+        }
+    })
+})
+
+const canConfirm = computed(() => {
+    if (!targetWorkflow.value) return false
+    return mappingRows.value.every(r => r.sourceId === null || r.targetId !== undefined)
+})
+
+watch(() => props.modelValue, async (open) => {
+    if (!open) return
+    targetWorkflowId.value = null
+    const [allWorkflows, tasks] = await Promise.all([
+        workflowService.getAll(),
+        taskService.getFiltered({ project: `/api/projects/${props.project.id}`, archived: false }),
+    ])
+    workflows.value = allWorkflows
+    projectTasks.value = tasks
+})
+
+function close() {
+    emit('update:modelValue', false)
+}
+
+async function confirm() {
+    if (!targetWorkflow.value) return
+    isSubmitting.value = true
+    try {
+        const mapping: Record<string, number | null> = {}
+        for (const r of mappingRows.value) {
+            if (r.sourceId !== null) {
+                mapping[String(r.sourceId)] = r.targetId
+            }
+        }
+        await workflowService.switchOnProject(props.project.id, {
+            workflowId: targetWorkflow.value.id,
+            mapping,
+        })
+        emit('switched')
+        close()
+    } finally {
+        isSubmitting.value = false
+    }
+}
+</script>
+
+<style scoped>
+.modal-enter-active,
+.modal-leave-active {
+    transition: opacity 0.15s ease;
+}
+.modal-enter-from,
+.modal-leave-to {
+    opacity: 0;
+}
+</style>