William Kendall Fuller (November 24, 1792 – November 11, 1883) was an American lawyer and politician who served two terms as a U.S. Representative from New York from 1833 to 1837.

Born in Schenectady, New York, Fuller attended the common schools, and graduated from Union College in 1810. He studied law. He was admitted to the bar in 1814 and commenced practice in Schenectady.

He served as district attorney of Madison County 1821–1829. He served as Adjutant General of New York from 1823 to 1824. He served as member of the State assembly in 1829 and 1830.

Fuller was elected as a Jacksonian to the Twenty-third and Twenty-fourth Congresses (March 4, 1833 – March 3, 1837).

He resumed the practice of law.

He died in Schenectady, New York, on November 11, 1883. He was interred in Vale Cemetery.

• United States Congress. "William K. Fuller (id: F000415)". Biographical Directory of the United States Congress.

 This article incorporates public domain material from the Biographical Directory of the United States Congress