| Claës Rundberg | |
| Birth Date: | 14 November 1874 |
| Birth Place: | Malmbäck, Sweden |
| Death Place: | Säby, Sweden |
| Sport: | Sports shooting |
| Show-Medals: | yes |
Claës J. Rundberg (14 November 1874 - 27 May 1958) was a Swedish sport shooter who competed in the 1908 Summer Olympics, where he won the silver medal in the team free rifle event.[1] He was also a member of the Swedish team which finished fifth in the team military rifle event.[2]