P. J. Cosijn

Pieter Jacob (P. J.) Cosijn (29 November 1840, Rijswijk – 26 August 1899, Leiden) was a late 19th-century Dutch scholar of Anglo-Saxon literature. His important work on Beowulf was edited by Rolf Bremmer.

Cosijn became a member of the Royal Netherlands Academy of Arts and Sciences in 1877.