| Hreiðar Bjarnason | |
| Birth Date: | 1973 5, df=yes |
| Position: | Defender |
| Years1: | 1993–1995 |
| Clubs1: | Þróttur |
| Years2: | 1996–2000 |
| Clubs2: | Breiðablik UBK |
| Years3: | 2001–2003 |
| Clubs3: | Fylkir |
| Years4: | 2003–2004 |
| Clubs4: | Breiðablik UBK |
| Nationalyears1: | 2000–2001 |
| Nationalteam1: | Iceland |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
Hreiðar Bjarnason (born 29 May 1973) is a retired Icelandic football defender.[1]