C.D. Hylton Senior High School, commonly known as Hylton High School, C.D. Hylton, or simply Hylton, is a public high school located in Dale City in Prince William County, Virginia, United States, and part of the Prince William County Public Schools division.

The school is named after real estate developer Cecil D. Hylton, who built thousands of homes in Dale City, Virginia and surrounding areas. Cecil D. Hylton donated the land that the school grounds are currently using.

In 2011, Mrs. Carolyn Custard (former Hylton High School principal) became the Director of Student Services for Prince William County Public Schools.

In May 2007, Newsweek magazine ranked Hylton High School the 298th-best school in the nation on its annual list of "Best High Schools in America."

Hylton High School is also home of the Irene V. Hylton Planetarium (named after Cecil's D. Hylton's wife). The planetarium offers shows to all 100 Prince William County Schools during the day as well as public offerings in the evenings and private shows by appointment.