William Haselden Ellerbe (April 7, 1862 – June 2, 1899) was the 86th governor of South Carolina from 1897 to 1899.

Born in Marion, South Carolina, he was raised in the Pee Dee region of South Carolina and attended Wofford College and Vanderbilt University.

After which he returned to Marion to marry Henrietta Rogers and engage in planting and business ventures.

His political career began when he was elected as Comptroller of South Carolina in 1890, serving until 1894.

He sought re-election two years later in the 1898 gubernatorial election and was unopposed in his bid.