Harford Technical High School (HTHS) is a four-year vocational/technical public high school in Bel Air in Harford County, Maryland, United States. The school is located near the center of the county across the street from Harford Community College and next to the John Archer School. The school was opened in 1978 as a vocational and technical school. Students in Harford County must apply to go to Harford Tech.