The eighteenth night of G1 Climax 33, featuring two semifinal matches, took place at Ryogoku Kokugikan in Sumida, Tokyo, Japan on August 12, 2023
Kazuchika Okada
EVIL
Tetsuya Naito
Will Ospreay
Hiroyoshi Tenzan
Master Wato
HAYATA
Kaito Kiyomiya
Shota Umino
Tomoaki Honma