The Biological Society of Washington is an international society of biologists whose primary interests center on the taxonomy and systematics of eukaryotic organisms. Members publish their observations in the Society's quarterly journal, the Proceedings of the Biological Society of Washington. Larger studies, symposia proceedings, and special collections of studies are published from time to time in the Society's Bulletin of the Biological Society of Washington.

The Bulletin of the Biological Society of Washington has been inactive since 2009.