John Urwin Dickenson (August 3, 1847 – January 3, 1932) was a Hamilton, Ontario contractor and political figure.

He went to Glanford Township, Canada West with his family in 1855, and learned the trades of bricklaying and masonry from his father.

Dickenson was a member of the township council for Glanford, serving as reeve in 1887, and was warden for Wentworth County in 1891.

He was secretary-treasurer for the South Wentworth Agricultural Society and served ten years as superintendent of the Great Central Fair in Hamilton.

He was elected to the provincial assembly in an 1896 by-election held after Nicholas Awrey resigned his seat.