These are the proceedings of the Workshop on At-sea Detection and Removal of Derelict Fishing Gear, held December 9–10, 2008 in Honolulu, Hawaii. This document summarizes the discussion on identifying existing knowledge, gaps in understanding, and actions that can be taken to allow progress toward at‐sea detection and removal of derelict fishing gear. Citation: McElwee, K. and C. Morishige (eds.). 2010. Proceedings of the Workshop on At-sea Detection and Removal of Derelict Fishing Gear. December 9-10, 2008. NOAA Technical Memorandum NOSOR&R-34.