M（133）
- Active Players
- M
M
- 42 Pitcher
- Machado, Andres
- ORIX Buffaloes
- 43 Catcher
- Machida, Hayato
- Hanshin Tigers
- 128 Pitcher (*)
- Mae, Yuito
- ORIX Buffaloes
- 79 Outfielder
- Maeda, Ginji
- Tohoku Rakuten Golden Eagles
- 51 Pitcher
- Maeda, Jun
- Fukuoka SoftBank Hawks
- 41 Pitcher
- Maeda, Yugo
- Fukuoka SoftBank Hawks
- 58 Outfielder
- Maegawa, Ukyo
- Hanshin Tigers
- 127 Infielder (*)
- Maekawa, Seita
- Hiroshima Toyo Carp
- 2 Infielder
- Maki, Shugo
- YOKOHAMA DeNA BAYSTARS
- 22 Catcher
- Makihara, Kota
- Fukuoka SoftBank Hawks
- 8 Infielder
- Makihara, Taisei
- Fukuoka SoftBank Hawks
- 53 Catcher
- Makino, Shoya
- Saitama Seibu Lions
- 70 Pitcher
- Mameda, Taishi
- Saitama Seibu Lions
- 66 Outfielder
- Mannami, Chusei
- Hokkaido Nippon-Ham Fighters
- 107 Pitcher (*)
- Marcelino, Hansel
- YOKOHAMA DeNA BAYSTARS
- 52 Pitcher
- Marte, Yunior
- Chunichi Dragons
- 138 Outfielder (*)
- Martin, Andy
- Chiba Lotte Marines
- 132 Pitcher (*)
- Martinez, Anthony
- Hanshin Tigers
- 2 Catcher
- Martinez, Ariel
- Hokkaido Nippon-Ham Fighters
- 92 Pitcher
- Martinez, Raidel
- Yomiuri Giants
- 219 Pitcher (*)
- Martinez, Randy
- Chunichi Dragons
- 8 Outfielder
- Maru, Yoshihiro
- Yomiuri Giants
- 4 Outfielder
- Maruyama, Kazuya
- Tokyo Yakult Swallows
- 68 Pitcher
- Maruyama, Shota
- Tokyo Yakult Swallows
- 31 Outfielder
- Masaki, Tomoya
- Fukuoka SoftBank Hawks
- 32 Catcher
- Mashiko, Kyosuke
- YOKOHAMA DeNA BAYSTARS
- 0 Infielder
- Masuda, Daiki
- Yomiuri Giants
- 52 Pitcher
- Masuda, Naoya
- Chiba Lotte Marines
- 61 Infielder
- Masuda, Riku
- Yomiuri Giants
- 63 Outfielder
- Masuda, Shu
- Tokyo Yakult Swallows
- 26 Pitcher
- Masuda, Takehisa
- Hiroshima Toyo Carp
- 46 Pitcher
- Mataki, Teppei
- Yomiuri Giants
- 14 Pitcher
- Matayoshi, Katsuki
- Fukuoka SoftBank Hawks
- 38 Pitcher
- Matsuba, Takahiro
- Chunichi Dragons
- 123 Pitcher (*)
- Matsubara, Kai
- Hanshin Tigers
- 35 Outfielder
- Matsubara, Seiya
- Saitama Seibu Lions
- 61 Pitcher
- Matsuda, Takuma
- Tohoku Rakuten Golden Eagles
- 021 Pitcher (*)
- Matsui, Hayate
- Yomiuri Giants
- 45 Pitcher
- Matsui, Tomotaka
- Tohoku Rakuten Golden Eagles
- 134 Infielder (*)
- Matsuishi, Shinya
- Chiba Lotte Marines
- 2 Catcher
- Matsukawa, Kou
- Chiba Lotte Marines
- 29 Pitcher
- Matsukihira, Yuta
- Chunichi Dragons
- 7 Outfielder
- Matsumoto, Go
- Hokkaido Nippon-Ham Fighters
- 49 Pitcher
- Matsumoto, Haru
- Fukuoka SoftBank Hawks
- 28 Pitcher
- Matsumoto, Kengo
- Tokyo Yakult Swallows
- 32 Catcher
- Matsumoto, Naoki
- Tokyo Yakult Swallows
- 114 Pitcher (*)
- Matsumoto, Ryodai
- Hokkaido Nippon-Ham Fighters
- 34 Pitcher
- Matsumoto, Ryoto
- YOKOHAMA DeNA BAYSTARS
- 40 Pitcher
- Matsumoto, Ryunosuke
- YOKOHAMA DeNA BAYSTARS
- 022 Catcher (*)
- Matsumoto, Ryunosuke
- Tokyo Yakult Swallows
- 45 Pitcher
- Matsumoto, Ryuya
- Hiroshima Toyo Carp
- 17 Pitcher
- Matsumoto, Wataru
- Saitama Seibu Lions
- 66 Pitcher
- Matsumoto, Yuki
- Fukuoka SoftBank Hawks
- 5 Catcher
- Matsuo, Shion
- YOKOHAMA DeNA BAYSTARS
- 93 Pitcher
- Matsuoka, Koki
- Hokkaido Nippon-Ham Fighters
- 55 Pitcher
- Matsuura, Keito
- Hokkaido Nippon-Ham Fighters
- 55 Outfielder
- Matsuyama, Ryuhei
- Hiroshima Toyo Carp
- 90 Pitcher
- Matsuyama, Shinya
- Chunichi Dragons
- 91 Pitcher
- Mejia, Humberto
- Chunichi Dragons
- 15 Pitcher
- Mima, Manabu
- Chiba Lotte Marines
- 26 Infielder
- Mimori, Masaki
- YOKOHAMA DeNA BAYSTARS
- 164 Pitcher (*)
- Minakuchi, Sota
- Fukuoka SoftBank Hawks
- 12 Catcher
- Minei, Hiroki
- Fukuoka SoftBank Hawks
- 17 Pitcher
- Mishima, Kazuki
- YOKOHAMA DeNA BAYSTARS
- 031 Outfielder (*)
- Mitsuka, Rui
- Yomiuri Giants
- 121 Pitcher (*)
- Miura, Daiki
- Saitama Seibu Lions
- 012 Pitcher (*)
- Miura, Katsunari
- Yomiuri Giants
- 204 Pitcher (*)
- Miura, Mizuki
- Chunichi Dragons
- 43 Catcher
- Miya, Taisei
- Chunichi Dragons
- 61 Pitcher
- Miyagawa, Tetsu
- Tokyo Yakult Swallows
- 65 Pitcher
- Miyagi, Daita
- YOKOHAMA DeNA BAYSTARS
- 18 Pitcher
- Miyagi, Hiroya
- ORIX Buffaloes
- 043 Pitcher (*)
- Miyaguni, Riku
- ORIX Buffaloes
- 57 Pitcher
- Miyahara, Shunsuke
- Yomiuri Giants
- 72 Pitcher
- Miyamori, Satoshi
- Tohoku Rakuten Golden Eagles
- 10 Infielder
- Miyamoto, Takeshi
- Tokyo Yakult Swallows
- 25 Pitcher
- Miyanishi, Naoki
- Hokkaido Nippon-Ham Fighters
- 126 Pitcher (*)
- Miyasato, Yuwa
- Fukuoka SoftBank Hawks
- 162 Pitcher (*)
- Miyauchi, Haruki
- Hokkaido Nippon-Ham Fighters
- 165 Pitcher (*)
- Miyazaki, Hayato
- Fukuoka SoftBank Hawks
- 36 Outfielder
- Miyazaki, Kazuki
- Hokkaido Nippon-Ham Fighters
- 44 Infielder
- Miyazaki, Ryusei
- Chiba Lotte Marines
- 51 Infielder
- Miyazaki, Toshiro
- YOKOHAMA DeNA BAYSTARS
- 117 Pitcher (*)
- Miyazawa, Taisei
- Saitama Seibu Lions
- 022 Catcher (*)
- Mizukami, Kei
- Tohoku Rakuten Golden Eagles
- 69 Pitcher
- Mizukami, Yoshinobu
- Saitama Seibu Lions
- 43 Infielder
- Mizuno, Tatsuki
- Hokkaido Nippon-Ham Fighters
- 53 Outfielder
- Mizutani, Shun
- Hokkaido Nippon-Ham Fighters
- 57 Catcher
- Mochimaru, Taiki
- Hiroshima Toyo Carp
- 8 Infielder
- Mogi, Eigoro
- Tokyo Yakult Swallows
- 35 Pitcher
- Moinelo, Livan
- Fukuoka SoftBank Hawks
- 31 Outfielder
- Moiseev, Nikita
- Tokyo Yakult Swallows
- 30 Pitcher
- Mombetsu, Keito
- Hanshin Tigers
- 56 Infielder
- Momosaki, Aoi
- Hanshin Tigers
- 220 Outfielder (*)
- Monier, Carlos
- Chunichi Dragons
- 95 Infielder
- Montero, Elehuris
- Hiroshima Toyo Carp
- 28 Pitcher
- Mori, Hiroto
- Chunichi Dragons
- 6 Infielder
- Mori, Keito
- YOKOHAMA DeNA BAYSTARS
- 122 Pitcher (*)
- Mori, Ryotaro
- Chiba Lotte Marines
- 16 Pitcher
- Mori, Shohei
- Hiroshima Toyo Carp
- 31 Infielder
- Mori, Shunta
- Chunichi Dragons
- 4 Catcher
- Mori, Tomoya
- ORIX Buffaloes
- 38 Pitcher
- Mori, Yuito
- YOKOHAMA DeNA BAYSTARS
- 45 Pitcher
- Morihara, Kohei
- YOKOHAMA DeNA BAYSTARS
- 120 Pitcher (*)
- Moriki, Daichi
- Hanshin Tigers
- 034 Pitcher (*)
- Morimoto, Tessei
- Yomiuri Giants
- 171 Catcher (*)
- Morishima, Ryota
- Fukuoka SoftBank Hawks
- 18 Pitcher
- Morishita, Masato
- Hiroshima Toyo Carp
- 36 Pitcher
- Morishita, Ryudai
- YOKOHAMA DeNA BAYSTARS
- 1 Outfielder
- Morishita, Shota
- Hanshin Tigers
- 47 Pitcher
- Morita, Shunya
- Yomiuri Giants
- 13 Pitcher
- Moriura, Daisuke
- Hiroshima Toyo Carp
- 127 Pitcher (*)
- Moriwaki, Ryosuke
- Saitama Seibu Lions
- 213 Pitcher (*)
- Moriyama, Akio
- Chunichi Dragons
- 121 Pitcher (*)
- Motomae, Fumiya
- Chiba Lotte Marines
- 30 Infielder
- Motoyama, Hiyu
- Saitama Seibu Lions
- 8 Outfielder
- Mugitani, Yusuke
- ORIX Buffaloes
- 15 Pitcher
- Mukunoki, Ren
- ORIX Buffaloes
- 93 Pitcher
- Muller, Kyle
- Chunichi Dragons
- 6 Infielder
- Mune, Yuma
- ORIX Buffaloes
- 1 Infielder
- Muneyama, Rui
- Tohoku Rakuten Golden Eagles
- 6 Infielder
- Murabayashi, Itsuki
- Tohoku Rakuten Golden Eagles
- 034 Catcher (*)
- Murakami, Kyoichiro
- ORIX Buffaloes
- 55 Infielder
- Murakami, Munetaka
- Tokyo Yakult Swallows
- 41 Pitcher
- Murakami, Shoki
- Hanshin Tigers
- 20 Pitcher
- Murakami, Taito
- Fukuoka SoftBank Hawks
- 5 Infielder
- Muramatsu, Kaito
- Chunichi Dragons
- 122 Pitcher (*)
- Muranishi, Ryota
- ORIX Buffaloes
- 34 Pitcher
- Murata, Kenichi
- Fukuoka SoftBank Hawks
- 99 Infielder
- Murata, Reon
- Saitama Seibu Lions
- 004 Infielder (*)
- Murayama, Gen
- Yomiuri Giants
- 50 Outfielder
- Mutoh, Atsuki
- Tohoku Rakuten Golden Eagles
- 65 Infielder
- Myose, Ryosuke
- Hokkaido Nippon-Ham Fighters