Doane Academy is a coeducational, independent day school serving students in pre-kindergarten through twelfth grade, located in Burlington in Burlington County, in the U.S. state of New Jersey. Originally called St. Mary's Hall, it was founded in May 1837 by Episcopal Bishop George Washington Doane, initially as an Episcopal girls' boarding school, the first in the United States to offer a classical academic education to women.

In 1955 affiliation with the diocese was severed. In 1966 a boys' school, known as Doane Academy, was built on campus. The schools were merged in 1974 as St. Mary's Hall-Doane Academy. Later the name was shortened to the Doane Academy.

The head of school is Erin Pike Mayo The school is accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools until July 2029 and has been accredited since 1989, and is a member of the New Jersey Association of Independent Schools, the National Association of Independent Schools and the National Association of Episcopal Schools.