Oceanside High School is an American public high school located in Oceanside, New York, United States.

The school was initially built on Merle Avenue, but moved to its current location on Skillman Avenue in 1955 and expanded to its current size in 1962.

The school's mascot is the Sailor, and teams compete countywide in a variety of sports.

Oceanside High School was ranked #424 in America in 2012.

There were 152 students (8.5% of enrollment) eligible for free lunch and 32 (1.8% of students) eligible for reduced-cost lunch.