diff --git a/package.json b/package.json
index 0c07ce8..0c58f5f 100755
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "db:migrate": "prisma migrate dev",
     "db:reset": "prisma migrate reset",
     "db:seed": "bun prisma/seed.ts",
+    "db:seed-demo": "bun prisma/seed-demo.ts",
     "test": "playwright test --config playwright-dyad.config.ts"
   },
   "dependencies": {
diff --git a/prisma/seed-demo.ts b/prisma/seed-demo.ts
new file mode 100644
index 0000000..9ad2092
--- /dev/null
+++ b/prisma/seed-demo.ts
@@ -0,0 +1,41 @@
+import { PrismaClient } from '@prisma/client'
+import bcrypt from 'bcryptjs'
+
+const prisma = new PrismaClient()
+const password = 'Demo2025!'
+
+const demoUsers = [
+  { email: 'demo@competencetrack.org', firstName: 'Anna', lastName: 'Müller', role: 'SCHOOL_ADMIN' },
+  { email: 'demo.vice@competencetrack.org', firstName: 'Clara', lastName: 'Schmidt', role: 'VICE_PRINCIPAL' },
+  { email: 'demo.teacher@competencetrack.org', firstName: 'Max', lastName: 'Lehrer', role: 'TEACHER' },
+  { email: 'demo.student@competencetrack.org', firstName: 'Lena', lastName: 'Schüler', role: 'STUDENT' },
+  { email: 'demo.parent@competencetrack.org', firstName: 'Thomas', lastName: 'Elter', role: 'PARENT' },
+]
+
+async function main() {
+  const passwordHash = await bcrypt.hash(password, 10)
+
+  for (const user of demoUsers) {
+    await prisma.user.upsert({
+      where: { email: user.email },
+      update: { isDemo: true, passwordHash },
+      create: { ...user, passwordHash, locale: 'de', isDemo: true },
+    })
+  }
+
+  const seededCount = await prisma.user.count({
+    where: { email: { in: demoUsers.map(({ email }) => email) }, isDemo: true },
+  })
+  if (seededCount !== demoUsers.length) throw new Error(`Expected ${demoUsers.length} demo accounts, found ${seededCount}`)
+
+  console.log(`Ensured ${seededCount} demo accounts.`)
+}
+
+main()
+  .catch((error) => {
+    console.error(error)
+    process.exit(1)
+  })
+  .finally(async () => {
+    await prisma.$disconnect()
+  })