Dorchester High School may refer to:
Dorchester High School (Massachusetts) (1852–2003) in the Dorchester neighborhood of Boston, Massachusetts, United States Dorchester High School for Girls (1925–1953) in the Dorchester neighborhood of Boston, Massachusetts, United States Dorchester High School (Nebraska) in Dorchester, Nebraska, United States Lord Dorchester Secondary School in Dorchester, Ontario, Canada
See also Dorchester (disambiguation)