Carl Walters (born 1944) is an American-born biologist known for his work involving fisheries stock assessments, the adaptive management concept, and ecosystem modeling. Walters has been a professor of Zoology and Fisheries at the University of British Columbia since 1969. He is one of the main developers of the computer simulation program Ecosim and is involved in the Sea Around Us Project established by Daniel Pauly, the Quantitative Modeling Group, and the Lenfest Oceans Future Project.