CyberFight Festival 2021 was a professional wrestling event promoted by CyberFight for its four brands, DDT Pro-Wrestling, Pro Wrestling Noah, Tokyo Joshi Pro Wrestling, and Ganbare Pro-Wrestling. It took place in Saitama, Japan, at the Saitama Super Arena and aired live on Wrestle Universe. The card comprised fifteen matches, with the first three being part of the Starting Battle pre-show. In the triple main event, Miyu Yamashita battled Yuka Sakazaki for the Princess of Princess Championship, Harashima fought Jun Akiyama for the KO-D Openweight Championship, and Naomichi Marufuji took on Keiji Mutoh for the GHC Heavyweight Championship. Other prominent matches saw The37Kamiina (Konosuke Takeshita and Yuki Ueno) fight Kaito Kiyomiya and Yoshiki Inamura, a DDT team led by Sanshiro Takagi matched against the NOAH stable Kongo led by Kenoh in a 12-man tag team match, and Sugiura-gun (Takashi Sugiura and Kazushi Sakuraba) battled Danshoku Dino and Super Sasadango Machine.
Takeiji Muto
Naomichi Marufuji
Jun Akiyama
HARASHIMA
Miyu Yamashita
Yuka Sakazaki
Kaito Kiyomiya
Yoshiki Inamura
Konosuke Takeshita
Yuki Ueno
Yuki Sato
Katsuhiko Nakajima
Daisuke Nakae
Manabu Soya
Hiroki Tanabe
Tadasuke Yoshida
Kazusada Higuchi
Yukio Sakaguchi
Akito Nishigaki
Naomi Yoshimura
Tadashi Takagi
Yukio Naya
Daisuke Sasaki
Soma Takao
Tetsuya Endo
Asou Inoue
Shunma Katsumata
Chris Brookes
Atsushi Kotoge
Daisuke Harada
Hajima Ohara
Yohei Hayata
Seiki Yoshioka
Yoshinari Ogawa
Maki Itoh
Marika Kobashi
Yuki Kamifuku
Hikari Noa
Mizuki Kaminade
Yuki Arai
Mitsuhiro Kitamiya
Hideki Okatani
Akiru Miyashita
Yoshihiro Sakai
Kazushi Sakuraba
Takashi Sugiura
Hyper Misao
Shoko Nakajima
Nodoka Tenma
Yuki Aino
Miu Watanabe
Ririko Ishizawa
Junta Miyawaki
Kinya Okada
Toi Kojima
Yuki Ino
Keisuke Ishii
Ken Ohka
Shota Suzuki
Kouki Iwasaki
Shuichiro Katsumura
Yumehito Imanari