| William Van Amberg Sullivan | |
| Jr/Sr1: | United States Senator |
| State1: | Mississippi |
| Term Start1: | May 31, 1898 |
| Term End1: | March 4, 1901 |
| Predecessor1: | Edward C. Walthall |
| Successor1: | Anselm J. McLaurin |
| State2: | Mississippi |
| District2: | 2nd |
| Term Start2: | March 4, 1897 |
| Term End2: | May 31, 1898 |
| Preceded2: | John C. Kyle |
| Succeeded2: | Thomas Spight |
| Birth Date: | 18 December 1857 |
| Birth Place: | Winona, Mississippi, U.S. |
| Death Place: | Oxford, Mississippi, U.S. |
| Resting Place: | St. Peter's Cemetery |
| Party: | Democratic |
William Van Amberg Sullivan (December 18, 1857March 21, 1918) was a United States representative and Senator from Mississippi.
Born near Winona, Mississippi, he attended the common schools in Panola County and the University of Mississippi at Oxford, where he was a member of St. Anthony Hall.[1]
He graduated from Vanderbilt University, in Nashville, Tennessee, in 1875, was admitted to the bar that year, and commenced practice in Austin. He moved to Oxford in 1877, was a member of the board of city aldermen, and was elected as a Democrat to the Fifty-fifth Congress and served from March 4, 1897, to May 31, 1898, when he resigned, having been appointed Senator.
He was appointed and subsequently elected to the U.S. Senate to fill the vacancy caused by the death of Edward C. Walthall and served from May 31, 1898, to March 3, 1901; he was not a candidate for reelection.
On September 8, 1908, Sullivan led a lynch mob which murdered a black man named Nelse Patton, who had been accused of killing a white woman. William Sullivan was quoted a day later as saying, "I led the mob which lynched Nelse Patton, and I'm proud of it. I directed every movement of the mob and I did everything I could to see that he was lynched."[2]
Sullivan retired from active business and resided in Washington, D.C. In 1918, he died in Oxford. Interment was in St. Peter's Cemetery.