Dragon Gate Summer Adventure Tag League 2015 - Night 12 was a Professional wrestling event produced by Dragon Gate, which took place on September 26, 2015 at the Kobe Sambo Hall in Kobe, Hyogo, Japan.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Flamita & Masaaki Mochizuki defeated Jimmyz (Jimmy Kanda & Mr. Kyu Kyu Naoki Tanizaki Toyonaka Dolphin) (10:08)
- VerserK (Naruki Doi & YAMATO) defeated Ryo Jimmy Saito & Sumo Fuji) (16:20) in a Summer Adventure Tag League 2015 Semi Final Match
- Jimmyz (Jimmy K-ness JKS & Jimmy Susumu) defeated Monster Express (Akira Tozawa & Masato Yoshino) (19:28) in a Summer Adventure Tag League 2015 Semi Final Match