East Lyme High School is a 9-12 high school in the Flanders Village region of East Lyme, Connecticut, United States. The school serves students from the towns of East Lyme and Salem, Connecticut. It is operated by East Lyme Public Schools. East Lyme High School has been open since 1967.

East Lyme High School students have been at the center of multiple controversies involving racism. During homecoming week in 2015, multiple students took part in a mock lynching on school grounds. As a response, representatives from the Anti-Defamation League were invited to lead a school-wide discussion on diversity. In 2021, a student was charged with a hate crime for writing a racial slur on another student's car.

Since East Lyme High School's founding in 1967, students from the neighboring town of Salem have attended East Lyme High School from grades 9 through 12, due to Salem lacking a high school of their own. In 1997, East Lyme High School was formally recognized as the official high school of Salem Public Schools after an official agreement was established between the two towns. In 2016, a new co-op agreement between East Lyme and Salem was adopted such that Salem students can continue to attend East Lyme High School through June 2039.

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. (July 2022)

• Evan R. Bernstein, community leader
• John McDonald, professional baseball player
• Jay Allen Sanford, author and cartoonist
• Carly Thibault-DuDonis, basketball coach
• Ed Toth, professional musician
• Pete Walker, professional baseball player

• Official website
• 2016 co-op agreement between Salem and East Lyme