Romblon, officially the Province of Romblon, is an archipelagic province of the Philippines located in the Mimaropa region. Its main components include Romblon, Romblon, an archipelagic municipality of the same name that also serves as the provincial capital; Tablas, the largest island, covering nine municipalities; Sibuyan with its three towns; as well as the smaller island municipalities of Corcuera, Banton, Concepcion, San Jose. The province lies south of Marinduque and Quezon, east of Oriental Mindoro, north of Aklan and Capiz, and west of Masbate. According to the 2020 census, it has a total population of 308,985.

Mimaropa, officially the Southwestern Tagalog Region, is an administrative region in the Philippines. It is one of two regions in the country having no land border with another region. The name is an acronym combination of its constituent provinces: Mindoro, Marinduque, Romblon and Palawan.