Dabney Carr (October 26, 1743 – May 16, 1773) is a member of the Virginia House of Burgesses and brother-in-law of Thomas Jefferson.

Carr was born on October 26, 1743 to John and Barbara Carr (née Overton) at Bear Castle, a large farm in Louisa County, Virginia.

He studies law at The College of William & Mary at the same time as his friend, Thomas Jefferson.

Carr marries Jefferson's younger sister, Martha, in 1765.