| Per Collinder | |
| Birth Date: | 22 May 1890 |
| Birth Place: | Sundsvall, Sweden |
| Death Date: | 6 December 1975 (age 85) |
| Death Place: | Uppsala, Sweden |
| Nationality: | Swedish |
| Occupation: | astronomer |
Per Collinder (22 May 1890 – 6 December 1975) was a Swedish astronomer.
Born at Sundsvall, he is known for a catalog of open clusters that he published in 1931, which is today known as the Collinder catalogue. He has written the books History of navigation and Worlds in Orbit.
He was married twice, and his first wife gave him four children.[1] Collinder died at Uppsala.