K-1 World GP 2023: ReBOOT～K-1 ReBIRTH～ was a kickboxing event held by K-1 on September 10, 2023, at the Yokohama Arena in Yokohama, Japan. Background: This was the first event produced by K-1's new producer Carlos Kikuta (formerly of GLORY Japan). This was also the first event to bring back the old K-1 Openweight World Grand Prix.