Cranston High School East, often called East, Cranston East, or abbreviated as CHSE, is a comprehensive high school located in the central part of Cranston, Rhode Island, with over 1,500 students in grades 9-12 and 150+ faculty members. The school mascot is the Thunderbolt, and its colors are green and white.

Cranston High School East is housed in two buildings, the main building at 899 Park Avenue and the William A. Briggs Building located at 845 Park Avenue, which is where the school was originally housed. The Briggs building is home to the administrative offices of Cranston Public Schools and also served as a junior high school in the early part of the 20th century.

Cranston East was the first high school in Cranston; before Cranston West opened in 1958, the school was called simply Cranston High. Cranston High School East is ranked 44-58th within Rhode Island.