| Birth Date: | 19 February 1889 |
| Birth Place: | Piteå, Sweden |
| Death Date: | 26 March 1951 (aged 62) |
| Death Place: | Nacka, Sweden |
| Height: | 180 cm |
| Weight: | 72 kg |
| Sport: | Athletics |
| Event: | 1500-10000 m |
| Club: | IK Göta |
| Pb: | 1500 m – 4:10.0 (1911) 5000 m – 15:40.4 (1912) 10000 m – 33:26.4 (1911) |
| Show-Medals: | yes |
Klas Julius Lundström (19 February 1889 – 26 March 1951) was a Swedish track and field athlete who competed in the 1912 Summer Olympics.[1] He finished 13th in the individual cross country competition (ca. 12 km). This was the sixth best Swedish result, so he was not awarded with a medal in the team cross country competition, where only the best three were honored. He also participated in the 5000 m event but failed to reach the final.