| Guðni Helgason | |
| Fullname: | Guðni Runar Helgason |
| Birth Date: | 1976 7, df=yes |
| Position: | Midfielder |
| Youthyears1: | 1993–1994 |
| Youthclubs1: | ÍF Völsungur |
| Youthyears2: | 1994–1995 |
| Youthclubs2: | Sunderland A.F.C. |
| Years1: | 1995–1996 |
| Clubs1: | ÍF Völsungur |
| Years2: | 1997 |
| Clubs2: | ÍB Vestmannaeyja |
| Years3: | 1997–1998 |
| Clubs3: | SG Wattenscheid 09 |
| Years4: | 1998–2000 |
| Clubs4: | ÍB Vestmannaeyja |
| Years5: | 2000–2001 |
| Clubs5: | L/F Hønefoss |
| Caps5: | 25 |
| Goals5: | 2 |
| Years6: | 2001–2003 |
| Clubs6: | Valur |
| Years7: | 2002 |
| Clubs7: | → IK Start |
| Caps7: | 8 |
| Goals7: | 0 |
| Years8: | 2004–2008 |
| Clubs8: | Fylkir |
| Years9: | 2008–2009 |
| Clubs9: | UMF Stjarnan |
Guðni Runar Helgason (born 16 July 1976) is a retired Icelandic football midfielder.[1]