Decatur High School could refer to:
Decatur High School (Alabama) — Decatur, Alabama Decatur High School (Arkansas) — Decatur, Arkansas Decatur High School (Georgia) — Decatur, Georgia Stephen Decatur High School (Decatur, Illinois), (1911–2000) Decatur High School (Michigan) — Decatur, Michigan Decatur High School (Texas) — Decatur, Texas Decatur High School (Federal Way, Washington) — Federal Way, Washington Decatur Central High School — Indianapolis, Indiana Stephen Decatur High School (Maryland) — Berlin, Maryland