Mambusao, officially the Municipality of Mambusao, is a municipality located in the province of Capiz in the Western Visayas region of the Philippines. As of the 2024 census, the municipality has a population of 41,768 people.
The municipality is situated within Capiz province, which occupies the northern portion of Panay Island. Like other municipalities in the region, Mambusao is part of the broader Western Visayas administrative division of the Philippines.