| Office: | Senator |
| Term Start: | 27 April 1938 |
| Term End: | 7 September 1938 |
| Constituency: | Administrative Panel |
| Death Date: | 1938 |
| Party: | Independent |
John Joseph Newcome (died 1938) was an independent Irish politician. He was a member of Seanad Éireann from April to August 1938. He was elected to the 2nd Seanad in April 1938 by the Administrative Panel.[1] He lost his seat at the August 1938 Seanad election.[1] He was a governor of the Mount Street Club, a charity that helped the unemployed.[2]