The Office of Naval Research recently sponsored and completed the Manufacturing Fuel Cell Manhattan Project (MFCMP). Utilizing experts from industry, government, and academia, the Navy Manufacturing Technology Program's Benchmarking Best Practices Center of Excellence, in conjunction with Montana Tech, determined the major fuel cell manufacturing cost drivers, gaps, and best practices. This document, which was produced by the collective efforts of the subject matter experts, will communicate current industry best practices, but more importantly, recommends manufacturing projects to advance fuel cell manufacturing.