William Wallace Kingsbury (June 4, 1828 – April 17, 1892) was a Delegate from the Territory of Minnesota.
Born in Towanda, Pennsylvania, he attended the academies at Towanda, and Athens, Pennsylvania. He clerked in a store, became a surveyor, and later moved to Endion, Minnesota (now Duluth) in 1852.
He became a member of the Minnesota Territorial House of Representatives in 1857 and a delegate to the Minnesota State Constitutional Convention in 1857. Kingsbury was elected as a Democrat to the 35th congress and served from March 4, 1857 to May 11, 1858, when a portion of the Territory was admitted as a State into the Union. He was not a candidate for renomination in 1858 and later returned to Towanda in 1865 and engaged in the real estate and insurance business.
Kingsbury was engaged as a commission merchant in Baltimore, Maryland for three years, after which he moved to Tarpon Springs, Florida in 1887. He was involved in real estate and mercantile pursuits until his death there and was interred in Cycadia Cemetery.
Kingsbury Creek, in St. Louis County, Minnesota, was named after Kingsbury.