Thomas Stone High School is a public high school in the eastern section of Waldorf, Maryland, United States, administered by the Charles County Board of Education.

The school colors are blue and gold and its mascot is the cougar.

It was named after Thomas Stone, a Maryland representative in the signing of the Declaration of Independence.

[2] Like Henry E. Lackey High School, it was originally constructed with some classrooms underground.

[citation needed] Thomas Stone is known for its basketball program.