Which police force depends on the Catalan government?

✓ Mossos d'Esquadra

The regional police of Cataluña is called Mossos d'Esquadra. The one of the País Vasco is the Ertzaintza and the one of Navarra the Policía Foral. These police forces are under the authority of the government of their comunidad (region with self-government), and they work together with the Policía Nacional and the Guardia Civil, which depend on the State. Look at the name: Mossos d'Esquadra is in Catalan, just as Ertzaintza is in Basque.