Donovan Catholic High School, is a Roman Catholic high school located in Toms River, in Ocean County, in the U.S. state of New Jersey. Operating under the supervision of the Roman Catholic Diocese of Trenton, it is the county's only Catholic high school. Located in the coastal community of Toms River Township, the school originally opened in 1962 as St. Joseph High School, but was renamed as Monsignor Donovan High School in 1983, after founder Msgr. Lawrence Donovan. The school adopted its current name in 2014.

Toms River is a township located on the Jersey Shore in Ocean County, in the U.S. state of New Jersey. Its mainland portion is also a census-designated place of the same name, which serves as the county seat of Ocean County. Formerly known as the Township of Dover, voters in a 2006 referendum approved a change of the official name to the Township of Toms River, adopting the name of the largest unincorporated community within the township. The township is a bedroom suburb of New York City in the New York metropolitan area, and a regional commercial hub in central New Jersey.