Redstone Federal Credit Union (or RFCU) is a federally chartered credit union based in Huntsville, Alabama. Redstone Federal Credit Union is currently Alabama's largest credit union, and is regulated and insured through the National Credit Union Administration (NCUA). Redstone Federal Credit Union currently operates 26 branches across Alabama and Tennessee as of December 2021. Redstone Federal Credit Union is currently ranked as the 35th largest credit union in the United States by assets as of December 2021.