| Claus Eftevaag | |
| Fullname: | Claus Lehland Eftevaag |
| Birth Date: | 20 December 1969 |
| Birth Place: | Kristiansand, Norway |
| Position: | defender |
| Years1: | 1986–1995 |
| Clubs1: | Start |
| Years2: | 1996–1997 |
| Clubs2: | Brann |
| Caps2: | 27 |
| Goals2: | 2 |
| Years3: | 1997–1998 |
| Clubs3: | Lierse |
| Caps3: | 21 |
| Goals3: | 2 |
| Nationalyears1: | 1984–1985 |
| Nationalteam1: | Norway U15 |
| Nationalcaps1: | 11 |
| Nationalgoals1: | 2 |
| Nationalyears2: | 1985–1986 |
| Nationalteam2: | Norway U16 |
| Nationalcaps2: | 12 |
| Nationalgoals2: | 2 |
| Nationalyears3: | 1986 |
| Nationalteam3: | Norway U17 |
| Nationalcaps3: | 2 |
| Nationalgoals3: | 0 |
| Nationalyears4: | 1988 |
| Nationalteam4: | Norway U18 |
| Nationalcaps4: | 2 |
| Nationalgoals4: | 0 |
| Nationalyears5: | 1987 |
| Nationalteam5: | Norway U19 |
| Nationalcaps5: | 6 |
| Nationalgoals5: | 4 |
| Nationalyears6: | 1989 |
| Nationalteam6: | Norway U20 |
| Nationalcaps6: | 4 |
| Nationalgoals6: | 0 |
| Nationalyears7: | 1987–1991 |
| Nationalteam7: | Norway U21 |
| Nationalcaps7: | 19 |
| Nationalgoals7: | 6 |
| Nationalyears8: | 1990–1995 |
| Nationalteam8: | Norway |
| Nationalcaps8: | 3 |
| Nationalgoals8: | 0 |
Claus Eftevaag (born 20 December 1969) is a retired Norwegian football defender.
Lierse SK