In astronomy, the Collinder catalog is a catalog of open clusters by Swedish astronomer Per Collinder. It was published in 1931 as an appendix to Collinder's paper On structural properties of open galactic clusters and their spatial distribution. Catalog objects may be denoted as Col + catalog number, or Cr + catalog number, e.g. "Cr 399".

Some notable objects from the catalog are:

* Collinder 2

* Collinder 6

* Collinder 7

* Collinder 11

* Collinder 12

* Collinder 14

* Collinder 20

* Collinder 22

* Collinder 23

* Collinder 29

* Collinder 39

* Collinder 42 (Pleiades)

* Collinder 50 (Hyades)

* Collinder 81

* Collinder 140

* Collinder 154

* Collinder 224

* Collinder 256

* Collinder 285

* Collinder 341

* Collinder 399 (Brocchi's Cluster)

* Collinder 442

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