HTMS Phutthaloetla Naphalai (FFG 462) () is the former USS Ouellet (FF-1077), a Knox-class frigate. The Royal Thai Navy purchased the ship from the US Navy after she was decommissioned on August 6, 1993. The ship subsequently underwent a US $14M refit at the Cascade General Shipyard, Portland, Oregon, and arrived in Thailand in 1998. As a Phutthayotfa Chulalok-class frigate, she has a sister ship, the HTMS Phutthayotfa Chulalok (FFG 461).