Skyline High School is a public high school in Longmont, Colorado, United States. It is part of the St. Vrain Valley School District. Current enrollment at the school is approximately 1260 students, in grades 9-12. The school mascot is the Falcon, and the school colors are red and yellow.

This article's list of alumni may not follow Wikipedia's verifiability policy. Please improve this article by removing names that do not have independent reliable sources showing they merit inclusion in this article AND are alumni, or by incorporating the relevant publications into the body of the article through appropriate citations. (June 2022)

• J. J. Raterink, Arena Football League player
• Kristen Schaal, actress and comedian
• JD Smith (born Joshua Seefried), founder of OutServe