Dr. van Regteren Altena was a Dutch entomologist, malacologist and palaeontologist. He was the Curator of Mollusca at the Rijksmuseum van Natuurlijke Historie (National Museum of Natural History) in Leiden, The Netherlands.

Relevant to the biota of the Gulf of Mexico, Dr. van Regteren Altena has published the following:

Altena, C. O. van Regteren. 1975. The marine Mollusca of Suriname (Dutch Guiana) Holocene and Recent. Part III. Gastropoda and Cephalopoda. Zoologische Verhandelingen 139: 104 pp., 11 pls.