Westminster High School is a public secondary school (grades 9-12) operated by Westminster Public Schools in Westminster, Adams County, Colorado, United States.

Features include three multi-purpose basketball courts, an indoor track, a lecture hall, and a 725-seat theater, all within a 375,000-square-foot (34,800 m2) building.

The school also features the Future Center, a portion of its library dedicated to teaching students about various career opportunities, post-secondary education, and concurrent enrollment in college level programs.

The original Westminster High School was located at 7300 Lowell, which later became the Career Enrichment Park when Westminster High School moved from 73rd and Lowell to its current location in 1976.

When originally established in 1949, the school colors were blue and white, and the mascot was a Warrior.