David John Johnson (born December 17, 1945 in Hamilton, Ontario) is a politician in Ontario, Canada. He was the mayor of East York from 1982 to 1993, a Progressive Conservative member of the Legislative Assembly of Ontario from 1993 to 1999, and a senior cabinet minister in the government of Mike Harris. He has also sought election to the federal House of Commons.

David Johnson (born 28 October 1981) is an Australian rules footballer who plays for the Geelong Football Club.

David Johnson (1827 – 1908) was a member of the second generation of Hudson River School painters.

David Johnson (October 3, 1782 – January 7, 1855) was an antebellum Democratic Governor of South Carolina from 1846 to 1848.

David Johnson is the Assistant Majority leader of the Iowa Senate and is the Senator from the 3rd District. He has served in the Iowa Senate since 2002 and served in the Iowa House of Representatives from 1998-2002.