William Bonnifield (September 8, 1814 – November 8, 1875), also known as William Bounifield and William Bonnefield, was a Democrat who served one month as Mayor of Kansas City, Missouri in 1863 during the American Civil War.
Bonnifield was born in Randolph, Virginia. He was involved in a mining operations in Running Creek, Colorado with the McGee family. He was pro-North in the American Civil War. He neglected his duties as mayor and resigned after 30 days.[1]