William Adams "Wild Bill" Hickman (April 16, 1815 – August 21, 1883) was an American frontiersman. He also served as a representative to the Utah Territorial Legislature.
Hickman was baptized into Church of Jesus Christ of Latter Day Saints in 1839 by John D. Lee. He later served as a personal bodyguard for Joseph Smith and Brigham Young. Hickman was reputedly a member of the Danites.
In April 1854, Hickman was asked by Brigham Young to go to Green River and establish a ferry under church ownership. Hickman found the area to be overrun by ferries, along with a growing uneasiness between Mormon ferrymen and mountain men. Instead, Hickman established a prosperous trading post at Pacific Springs near South Pass, twenty-six miles east of Green River. Hickman was appointed sheriff and county prosecuting attorney, assessor and collector by Judge Appleby in 1854 at Fort Supply, twelve miles south of Fort Bridger. In August 1854, Hickman was elected to the Utah Territorial Legislature for the area of Green River.
On 8 February 1856, Hickman, along with Porter Rockwell, and at the request of Brigham Young, carried the mail from Independence, Missouri to Salt Lake City. Porter Rockwell carried the mail from Fort Laramie to Salt Lake, and Hickman from Laramie to Independence. The trip took Hickman nearly four months to complete.
He was an important figure in the Utah War. Hickman torched Fort Bridger and numerous supply trains of the Federal Army.
Hickman was part of the militia that carried out Brigham Young's extermination order against the Timpanogos during the Battle at Fort Utah. They were under orders to kill all the men and take the women and children captive. General Daniel H. Wells had Antonga Black Hawk lead a segment of the militia, including Hickman, up Rock Canyon to attack those who were trying to escape. They found the Timpanogos chief, Old Elk, dead in one of teepees. According to Hickman, Jim Bridger had offered a $100 reward for Old Elk's head. Hickman chopped of Old Elk's head and brought it back to Fort Utah. There, he hung Old Elk's head by its hair from the walls of the roof. Dr. Blake saw the head, and ordered more heads to be chopped off. Around 50 heads were piled in boxes for two weeks, next to where they kept the prisoners. They were then delivered to Salt Lake. Some ghost stories have circulated about the victims' ghosts haunting Rocky Canyon.