Template:Saitama Seibu Lions roster

Pitchers

• 00 Jefry Yan
• 12 Yūtarō Watanabe
• 16 Chihiro Sumida
• 17 Wataru Matsumoto
• 19 Shunsuke Satō
• 42 Bo Takahashi
• 43 Shinnosuke Hada
• 45 Keisuke Honda
• 48 Tatsuya Imai
• 54 Albert Abreu
• 58 Yūta Nakamura
• 70 Taishi Mameda

Catchers

• 22 Yūto Koga
• 27 Ginjirō Sumitani

Infielders

• 0 Ryōsuke Kodama
• 4 Kakeru Yamanobe
• 6 Sōsuke Genda
• 50 Wataru Takamatsu
• 60 Takeya Nakamura
• 62 Natsuo Takizawa

Outfielders

• 1 Takumi Kuriyama
• 46 Shōhei Suzuki
• 51 Manaya Nishikawa
• 63 Shinya Hasegawa
• 68 Junichirō Kishi
• 75 Kōichi Okumura

Manager

• 72 Hisanobu Watanabe (Interim)

Coaches

• 83 Yōsuke Hiraishi (Head/Batting strategy)
• 81 Kiyoshi Toyoda (Pitching)
• 93 Hayato Aoki (Pitching)
• 82 Kōsuke Noda (Battery)
• 80 Shigenobu Shima (Batting)
• 91 Hisashi Takayama (Batting)
• 76 Masahiro Abe (Infield defense/base running)
• 86 Shōgo Akada (Outfield defense/base running)

• 11 Taiga Ueda
• 13 Kōna Takahashi
• 14 Tatsushi Masuda
• 15 Kaito Yoza
• 20 Ichirō Tamura
• 21 Natsuki Takeuchi
• 23 Ryōta Itogawa
• 25 Katsunori Hirai
• 29 Minato Aoyama
• 34 Hiroshi Kaino
• 36 Haruto Yamada
• 40 Shōta Hamaya
• 41 Haruse Narita
• 47 Haruki Sugiyama
• 56 Taisei Miyazawa
• 57 Masaya Kuroda
• 59 Ren Omagari
• 61 Kaima Taira
• 69 Yoshinobu Mizukami
• 71 Shinya Sugai

Catchers

• 2 Masatoshi Okada
• 37 Sena Tsuge
• 38 Kaito Noda
• 65 Takeru Furuichi

• 5 Shūta Tonosaki
• 8 Kento Watanabe
• 10 Ryūsei Satō
• 30 Hiyū Motoyama
• 31 Shōta Hiranuma
• 32 Takayoshi Yamamura
• 44 Jesús Aguilar
• 52 Naomasa Yōkawa
• 66 Brandon
• 99 Reon Murata

Outfielders

• 7 Yūji Kaneko
• 9 Takuya Hiruma
• 33 Yūdai Furukawa
• 35 Seiya Matsubara
• 55 Franchy Cordero
• 73 Wataru Takagi

Manager

• 74 Fumiya Nishiguchi

Coaches

• 79 Tatsuya Ozeki (General fielding)
• 96 Shōta Nakata (Battery)
• 88 Hiroyuki Ōshima (Batting)
• 87 Satoshi Kuroda (Infield defense/base running)
• 84 Masato Kumashiro (Outfield defense/base running)
• 95 Tatsuya Ōishi (General pitching)
• 90 Shūichirō Osada (Pitching)
• 85 Daiki Enokida (Pitching)
• 97 Tomoshi Aoki (Development/Chief human resource development)

Third squad

• 98 Yūta Arakawa (Battery/Bullpen catcher/Human resource development)
• 94 Yūji Onizaki (Infield defense/base running)