Henry Peter Haun (January 18, 1815 – June 6, 1860) was a California judge, farmer, and U.S.

[1] He was appointed by Governor John B. Weller to serve out the remaining four months of Senator David C. Broderick's term following his predecessor's death in a duel in 1859.

[2] Haun was elected as the Prosecuting Attorney of Scott County, Kentucky.

[1][2] On October 29, 1859, he was selected by Governor John B. Weller to fill the vacancy of David C. Broderick in the U.S. Senate.

[citation needed] Haun died on June 6, 1860, in Marysville, California at age 45, several days after returning from Washington, D.C.[1][2]