Augustine Washington Jr. (1720–1762) was an American soldier, planter, politician, and member of the Washington family. He was the second and youngest son of Augustine Washington and Jane Butler, and George Washington's half-brother. Augustine Washington Jr. married Anne Aylett at "." She was the daughter and coheiress of William Aylett of Westmoreland County, Virginia. The couple had four children. Augustine Jr. was a member of the Virginia House of Burgesses from Westmoreland County from 1754 to 1758. He also was a member of the Ohio Company.