| John E. Cunningham | |
| Office1: | Member of the U.S. House of Representatives from Washington's 7th district |
| Term Start1: | May 17, 1977 |
| Term End1: | January 3, 1979 |
| Successor1: | Mike Lowry |
| State Senate2: | Washington |
| District2: | 33rd |
| Term Start2: | January 13, 1975 |
| Term End2: | January 10, 1977 |
| Predecessor2: | Frank Connor |
| Successor2: | Eric Rohrbach |
| State House3: | Washington |
| District3: | 33rd |
| Term Start3: | January 8, 1973 |
| Term End3: | January 13, 1975 |
| Predecessor3: | John L. O'Brien |
| Successor3: | Eleanor Lee |
| Birth Name: | John Edward Cunningham III |
| Birth Date: | 27 March 1931 |
| Birth Place: | Chicago, Illinois, U.S. |
| Alma Mater: | University of San Francisco Seattle University |
| Profession: | Businessman |
John Edward "Jack" Cunningham III (born March 27, 1931) is an American former politician who served as a former Republican U.S. Representative from Washington's seventh district for one term from 1977 to 1979.
Prior to his service in the U.S. House, Cunningham served in the Washington House of Representatives from 1973 to 1975, and after that in the Washington State Senate from 1975 to 1977. He served in the United States Air Force Reserve in 1953 and 1954. Cunningham lived in Des Moines, Washington.
Cunningham was elected as a Republican to the seventh district vacancy in a special election when U.S. Representative Brock Adams resigned to become Secretary of Transportation. However his victory in this liberal district was more the result of confusion with Adams's resignation. Cunningham lost reelection in 1978, and served from May 17, 1977 – January 3, 1979.