Cagayancillo, officially the Municipality of Cagayancillo, is a 6th class municipality in the province of Palawan, Philippines. According to the 2020 census, it has a population of 6,884 people.
Located between the islands of Palawan and Negros in the Sulu Sea, Cagayancillo is the closest settlement to the Tubbataha National Marine Park. The word Cagayancillo is Spanish meaning "Little Cagayan".