Dominion 6.18 was a professional wrestling pay-per-view (PPV) promoted by New Japan Pro Wrestling (NJPW). The event took place on June 18, 2011, in Osaka, Osaka, at the Osaka Prefectural Gymnasium. The event featured ten matches, five of which were contested for championships. It was the third event under the Dominion name.

Dominion 6.18 featured ten professional wrestling matches that involved different wrestlers from pre-existing scripted feuds and storylines. Wrestlers portrayed villains, heroes, or less distinguishable characters in the scripted events that built tension and culminated in a wrestling match or series of matches.

The event featured a tag team match, where NJPW's IWGP Tag Team Champions, Bad Intentions (Giant Bernard and Karl Anderson), defeated Pro Wrestling Noah's GHC Tag Team Champions, Takuma Sano and Yoshihiro Takayama, to become double champions. The event also featured the surprise debut of former WWE wrestler Brian Kendrick, who replaced Killer Rabbit as Gedo and Jado's partner. During the event, Consejo Mundial de Lucha Libre (CMLL) wrestler Máscara Dorada regained the CMLL World Middleweight Championship from Ryusuke Taguchi to whom he had lost it at Fantastica Mania 2011 the previous January, while DDT Pro-Wrestling wrestler and winner of the 2011 Best of the Super Juniors Kota Ibushi captured the IWGP Junior Heavyweight Championship from Prince Devitt. In the main event, Hiroshi Tanahashi successfully defended the IWGP Heavyweight Championship against Hirooki Goto.