Fighting Spirit Unleashed (2023) was a professional wrestling event promoted by New Japan Pro-Wrestling (NJPW). It took place at the Sam's Town Live venue in Las Vegas, Nevada on October 28, 2023. It was the sixth event held under the Fighting Spirit Unleashed name. Besides wrestlers from NJPW, the show featured talent from Consejo Mundial de Lucha Libre (CMLL).

Shin Takagi , known by the ring name Shingo Takagi, is a Japanese professional wrestler. He is currently signed to New Japan Pro-Wrestling (NJPW). He is a member of the Los Ingobernables de Japón stable and is a four-time and current NEVER Openweight Champion. Takagi is best known for his appearances in NJPW and Dragongate, as well as Ring of Honor (ROH), All Japan Pro Wrestling (AJPW) and the puroresu independent circuit.