| Pétur Arnþórsson | |
| Fullname: | Pétur Wilhelm Arnþórsson |
| Birth Date: | 1965 5, df=yes |
| Position: | Midfielder |
| Years1: | 1981–1985 |
| Clubs1: | Þróttur |
| Years2: | 1986 |
| Clubs2: | Viking |
| Caps2: | 12 |
| Goals2: | 0 |
| Years3: | 1987–1993 |
| Clubs3: | Fram |
| Years4: | 1994–1996 |
| Clubs4: | Leiknir |
| Years5: | 1997–1998 |
| Clubs5: | Fram |
| Nationalyears1: | 1984–1990 |
| Nationalteam1: | Iceland |
| Nationalcaps1: | 15 |
| Nationalgoals1: | 1 |
Pétur Arnþórsson (born 8 May 1965) is a retired Icelandic football midfielder.[1]