| Ingar Sletten Kolloen | |
| Birth Date: | 9 July 1951 |
| Nationality: | Norwegian |
| Occupation: | Journalist Biographer Novelist Playwright |
Ingar Sletten Kolloen (born 9 July 1951) is a Norwegian journalist, biographer, novelist and playwright. He has written biographies of Tor Jonsson, Knut Hamsun and Joralf Gjerstad. He wrote the play Jeg kunne gråte blod in 2004, and the novel Den fjerde engelen in 2007.[1]