Hermosa, officially the Municipality of Hermosa (Tagalog: Bayan ng Hermosa, Kapampangan: Balen ning Hermosa; Ilocano: Ili ti Hermosa), is a municipality in the province of Bataan, Philippines. According to the 2024 census, it has a population of 80,557 people.

Historically, the town was established in 1756 by Dominican priests. At that time, it was known as Llana Hermosa and composed of Mabuco and Mabuyan. It was then still part of Pampanga, like the rest of Bataan. It became an independent missionary center in 1756 with Saint Peter de Verona as its patron saint.

The town of Hermosa was very peaceful and progressive before World War II. When the war broke out, their quiet routine was disturbed. During the Bataan Death March, civilians of Hermosa risked the ire of the Japanese by secretly passing food to Filipino and American soldiers.

Hermosa is located directly south of Dinalupihan and south-southwest of San Fernando, Pampanga (the regional city center). Hermosa borders the province of the Pampanga to the northeast, with Manila Bay to the east.

Hermosa is home to the Roosevelt Protected Landscape and Subic Bay Freeport Zone (SBFZ; along with Morong also in the province of Bataan, and Olongapo and Subic in Zambales), and is accessible via the Bataan Provincial Expressway, off Exit 10 and Jose Abad Santos Avenue. It is 19 kilometres (12 mi) from Balanga and 105 kilometres (65 mi) from Manila.

According to the Philippine Statistics Authority, the municipality has a land area of 157.00 square kilometres (60.62 sq mi)  constituting 11.43% of the 1,372.98-square-kilometre- (530.11 sq mi) total area of Bataan.

Hermosa is politically subdivided into 23 barangays. Each barangay consists of puroks and some have sitios.

In the 2020 census, Hermosa had a population of 77,443. The population density was 490 inhabitants per square kilometre (1,300/sq mi).