Cajidiocan, officially known as the Municipality of Cajidiocan, is a municipality located in the province of Romblon in the Philippines. According to the 2024 census, the municipality has a population of 23,488 people.
The municipality is situated on Sibuyan Island, an area often referred to as the "Galapagos of Asia." This designation stems from the island's pristine natural environment and its high rate of endemism regarding local flora and fauna.