| Office: | County Mayor of Troms |
| Term Start: | 18 October 2011 |
| Term End: | 28 October 2019 |
| Deputy: | Christine Bertheussen Killie Irene Dahl |
| 1Blankname: | Cabinet Chair |
| 1Namedata: | Pia Svendsgaard Line Fusdahl Cecilie Myrseth Willy Ørnebakk |
| Predecessor: | Terje Olsen |
| Successor: | Ivar B. Prestbakmo (Troms og Finnmark county) |
| Birth Date: | 22 November 1951 |
| Party: | Labour |
Knut Werner Hansen (born 22 November 1951) is a Norwegian politician for the Labour Party.
He served as a deputy representative to the Storting from Troms between 1997 and 2009. In total he met during 1 year and 46 days of parliamentary session.
He was born in Skjervøy Municipality. He was a member of the municipal council of Karlsøy Municipality. Following the 2011 local elections, he was elected county mayor of Troms and thereby also the Troms County Municipality, with the Conservatives' Christine Bertheussen Killie as deputy.[1] He was re-elected following the 2015 local elections, this time with the Liberals' Irene Dahl as deputy.[2] Following the decision to merge Troms and Finnmark counties and the 2019 local elections, Ivar B. Prestbakmo was elected as county mayor of the new county.[3]