Carl Andrew Lahti (born 1967) is a United States Navy rear admiral and submarine warfare officer who is dual-hatted as the 36th commander of the United States Naval Forces Japan and commander of Navy Region Japan since July 14, 2021. As CNFJ/CNRJ, Lahti is responsible for providing shore readiness to U.S. naval forces in Japan and maritime support to the American forward presence in Japan as well as cooperation with the Japan Maritime Self-Defense Force to promote regional stability and deter aggression. He most recently served as the 91st Commandant of Naval District Washington and deputy commander of the Joint Force Headquarters National Capital Region from June 2018 to June 2021.