Pablo Castrillo Zapater (born 2 January 2001) is a Spanish cyclist, who currently rides for UCI WorldTeam Movistar Team.

[4][5] His brother Jaime also competed as a professional cyclist until 2022.

[6] Starting in 2025, he will race for Movistar Team.

[8][9] He won stage 15 by distancing himself from Aleksandr Vlasov and Pavel Sivakov on the "hellish" slopes of Cuitu Negru - one of the most brutal climbs of that year's Vuelta.

This biographical article relating to Spanish cycling is a stub.