Sual, officially the Municipality of Sual (Pangasinan: Baley na Sual; Ilocano: Ili ti Sual; Tagalog: Bayan ng Sual), is a municipality in the province of Pangasinan, Philippines. According to the 2024 census, it has a population of 38,625 people.

It is one of the towns where the Spanish galleon brought their goods to trade. The Philippines largest coal power plant, the 1,200 megawatt Sual Power Station, is located in this municipality. It used to be owned by Mirant Services LLC.

Sual used to be a part of a town called San Isidro Labrador de Tobuang (now called Labrador). However, Sual would separate from this town when an issue was decreed by the Spanish Governor-General Rafael María de Aguilar y Ponce de León. Naval Base Lingayen built a PT boat base at Sual in 1945.

On November 18, 1986, Vice Mayor Fernando R. de la Cruz was assassinated in Barangay Paitan West by unknown gunmen while on his way home with two companions. De la Cruz was then the vice chairman of the Pangasinan chapter of the Bagong Alyansang Makabayan (Bayan) when the shooting took place.

In January 2008, Bolinao Mayor Alfonso Celeste said the local government will file for damages against the Indonesian owners of the barge APOL 3003. The University of the Philippines Marine Science Institute (UPMSI) stated that the environmental damage was ₱54.9 million. The barge towed by a tug boat from Indonesia to the power plant in Sual on November 27 when Typhoon Mina destroyed its anchor and rope, then hurled it to Ilog Malino reef, spilling 95% of its coal cargo. The hard coal spill spread to 33 hectares (82 acres) of coral and sea grass areas.

Sual is situated 20.06 kilometres (12.46 mi) from the provincial capital Lingayen, and 228.99 kilometres (142.29 mi) from the country's capital city of Manila.

Sual is politically subdivided into 19 barangays. Each barangay consists of puroks and some have sitios.

Poverty incidence of Sual