K（130）
- Active Players
- K
K
- 5 Infielder
- Kadowaki, Makoto
- Yomiuri Giants
- 154 Outfielder (*)
- Kai, Ikumi
- Fukuoka SoftBank Hawks
- 10 Catcher
- Kai, Takuya
- Yomiuri Giants
- 34 Pitcher
- Kaino, Hiroshi
- Saitama Seibu Lions
- 58 Outfielder
- Kajiwara, Kouki
- YOKOHAMA DeNA BAYSTARS
- 41 Pitcher
- Kajiya, Ren
- Tohoku Rakuten Golden Eagles
- 48 Catcher
- Kakinuma, Tomoya
- Tokyo Yakult Swallows
- 3 Outfielder
- Kakunaka, Katsuya
- Chiba Lotte Marines
- 022 Catcher (*)
- Kameda, Keita
- Yomiuri Giants
- 64 Pitcher
- Kamichatani, Taiga
- Fukuoka SoftBank Hawks
- 4 Infielder
- Kamikawabata, Daigo
- Hokkaido Nippon-Ham Fighters
- 8 Outfielder
- Kamizato, Kazuki
- YOKOHAMA DeNA BAYSTARS
- 103 Pitcher (*)
- Kanabuchi, Koki
- YOKOHAMA DeNA BAYSTARS
- 120 Infielder (*)
- Kaneda, Yuta
- Chiba Lotte Marines
- 130 Infielder (*)
- Kaneko, Koji
- Saitama Seibu Lions
- 134 Infielder (*)
- Kaneko, Kyosuke
- Tohoku Rakuten Golden Eagles
- 21 Pitcher
- Kanemaru, Yumeto
- Chunichi Dragons
- 24 Pitcher
- Kanemura, Shoma
- Hokkaido Nippon-Ham Fighters
- 19 Pitcher
- Karakawa, Yuki
- Chiba Lotte Marines
- 58 Pitcher
- Karashima, Wataru
- Tohoku Rakuten Golden Eagles
- 46 Pitcher
- Kariu, Shoma
- Saitama Seibu Lions
- 47 Pitcher
- Katayama, Hiromi
- YOKOHAMA DeNA BAYSTARS
- 49 Pitcher
- Katayama, Raiku
- ORIX Buffaloes
- 37 Infielder
- Kato, Hibiki
- YOKOHAMA DeNA BAYSTARS
- 14 Pitcher
- Katoh, Takayuki
- Hokkaido Nippon-Ham Fighters
- 49 Catcher
- Katoh, Takuma
- Chunichi Dragons
- 113 Pitcher (*)
- Katoh, Yamato
- Hokkaido Nippon-Ham Fighters
- 0 Infielder
- Katsuda, Naru
- Hiroshima Toyo Carp
- 126 Infielder (*)
- Katsuki, Kazuya
- ORIX Buffaloes
- 28 Outfielder
- Katsumata, Atsushi
- YOKOHAMA DeNA BAYSTARS
- 129 Infielder (*)
- Katsumata, Rui
- Chiba Lotte Marines
- 41 Pitcher
- Katsuno, Akiyoshi
- Chunichi Dragons
- 135 Pitcher (*)
- Kawachi, Kosuke
- ORIX Buffaloes
- 66 Outfielder
- Kawada, Yushin
- Saitama Seibu Lions
- 44 Outfielder
- Kawagoe, Seiji
- Chunichi Dragons
- 132 Pitcher (*)
- Kawaguchi, Toya
- Fukuoka SoftBank Hawks
- 218 Infielder (*)
- Kawakami, Rii
- Chunichi Dragons
- 121 Pitcher (*)
- Kawakatsu, Sorato
- Hokkaido Nippon-Ham Fighters
- 58 Pitcher
- Kawamura, Tokito
- Chiba Lotte Marines
- 61 Outfielder
- Kawamura, Yuto
- Fukuoka SoftBank Hawks
- 127 Pitcher (*)
- Kawano, Kei
- Hiroshima Toyo Carp
- 28 Pitcher
- Kawano, Ryusei
- Hokkaido Nippon-Ham Fighters
- 128 Pitcher (*)
- Kawano, Shinichiro
- Fukuoka SoftBank Hawks
- 045 Infielder (*)
- Kawano, Sota
- ORIX Buffaloes
- 067 Infielder (*)
- Kawarada, Jumpei
- Yomiuri Giants
- 130 Infielder (*)
- Kawasaki, Toshiaki
- Hanshin Tigers
- 0 Infielder
- Kawase, Hikaru
- Fukuoka SoftBank Hawks
- 94 Pitcher
- Kawase, Kento
- ORIX Buffaloes
- 129 Pitcher (*)
- Kawashimo, Masahiro
- Saitama Seibu Lions
- 29 Pitcher
- Kemna, Makoto
- Hiroshima Toyo Carp
- 28 Pitcher
- Kesamaru, Yuki
- Hanshin Tigers
- 67 Pitcher
- Kikuchi, Harun
- Hiroshima Toyo Carp
- 28 Pitcher
- Kikuchi, Riku
- Chiba Lotte Marines
- 33 Infielder
- Kikuchi, Ryosuke
- Hiroshima Toyo Carp
- 55 Pitcher
- Kikuchi, Taiki
- Hokkaido Nippon-Ham Fighters
- 68 Pitcher
- Kimura, Hikaru
- Fukuoka SoftBank Hawks
- 58 Pitcher
- Kimura, Taisei
- Fukuoka SoftBank Hawks
- 53 Pitcher
- Kimura, Yuto
- Chiba Lotte Marines
- 0 Infielder
- Kinami, Seiya
- Hanshin Tigers
- 147 Outfielder (*)
- Kinoshita, Hayato
- Fukuoka SoftBank Hawks
- 018 Pitcher (*)
- Kinoshita, Motoya
- Yomiuri Giants
- 54 Pitcher
- Kinoshita, Rito
- Hanshin Tigers
- 35 Catcher
- Kinoshita, Takuya
- Chunichi Dragons
- 47 Pitcher
- Kirishiki, Takuma
- Hanshin Tigers
- 131 Pitcher (*)
- Kise, Shota
- Saitama Seibu Lions
- 68 Outfielder
- Kishi, Junichiro
- Saitama Seibu Lions
- 11 Pitcher
- Kishi, Takayuki
- Tohoku Rakuten Golden Eagles
- 27 Catcher
- Kishida, Yukinori
- Yomiuri Giants
- 125 Infielder (*)
- Kishimoto, Daiki
- Hiroshima Toyo Carp
- 132 Infielder (*)
- Kishimoto, Yuya
- Tohoku Rakuten Golden Eagles
- 38 Outfielder
- Kita, Ryoto
- ORIX Buffaloes
- 020 Catcher (*)
- Kita, Ryusuke
- Yomiuri Giants
- 50 Infielder
- Kitamura, Keigo
- Tokyo Yakult Swallows
- 027 Infielder (*)
- Kitamura, Rio
- Yomiuri Giants
- 56 Pitcher
- Kitaura, Ryuji
- Yomiuri Giants
- 15 Pitcher
- Kitayama, Koki
- Hokkaido Nippon-Ham Fighters
- 21 Infielder
- Kiyomiya, Kotaro
- Hokkaido Nippon-Ham Fighters
- 20 Pitcher
- Kizawa, Naofumi
- Tokyo Yakult Swallows
- 155 Outfielder (*)
- Kobari, Daiki
- YOKOHAMA DeNA BAYSTARS
- 22 Catcher
- Kobayashi, Seiji
- Yomiuri Giants
- 124 Catcher (*)
- Kobayashi, Yuta
- Hiroshima Toyo Carp
- 0 Infielder
- Kobukata, Hiroto
- Tohoku Rakuten Golden Eagles
- 123 Pitcher (*)
- Kobune, Tsubasa
- Hiroshima Toyo Carp
- 0 Infielder
- Kodama, Ryosuke
- Saitama Seibu Lions
- 61 Pitcher
- Koga, Kosei
- Tohoku Rakuten Golden Eagles
- 119 Infielder (*)
- Koga, Teruki
- Saitama Seibu Lions
- 2 Catcher
- Koga, Yudai
- Tokyo Yakult Swallows
- 22 Catcher
- Koga, Yuto
- Saitama Seibu Lions
- 120 Pitcher (*)
- Kogita, Atsuya
- ORIX Buffaloes
- 33 Infielder
- Kohama, Yuto
- Yomiuri Giants
- 135 Outfielder (*)
- Kohno, Hikaru
- Chiba Lotte Marines
- 047 Pitcher (*)
- Kohno, Yusaku
- Yomiuri Giants
- 37 Catcher
- Kohri, Takuya
- Yomiuri Giants
- 17 Pitcher
- Koja, Tatsuki
- Tohoku Rakuten Golden Eagles
- 10 Catcher
- Kojima, Taiga
- Saitama Seibu Lions
- 015 Pitcher (*)
- Komiya, Yume
- Tokyo Yakult Swallows
- 73 Infielder
- Komori, Kohtaro
- Tohoku Rakuten Golden Eagles
- 70 Pitcher
- Kondo, Ren
- Chunichi Dragons
- 130 Catcher (*)
- Kondo, Taiga
- YOKOHAMA DeNA BAYSTARS
- 3 Outfielder
- Kondoh, Kensuke
- Fukuoka SoftBank Hawks
- 66 Pitcher
- Konno, Ryuta
- Tohoku Rakuten Golden Eagles
- 122 Catcher (*)
- Koresawa, Ryosuke
- Saitama Seibu Lions
- 35 Pitcher
- Kotajima, Seiryu
- ORIX Buffaloes
- 45 Pitcher
- Kozawa, Reiji
- Tokyo Yakult Swallows
- 5 Infielder
- Kozono, Kaito
- Hiroshima Toyo Carp
- 18 Pitcher
- Kozono, Kenta
- YOKOHAMA DeNA BAYSTARS
- 56 Outfielder
- Kubo, Shu
- Hiroshima Toyo Carp
- 58 Outfielder
- Kubota, Yosuke
- ORIX Buffaloes
- 35 Pitcher
- Kudo, Taiki
- Hiroshima Toyo Carp
- 49 Pitcher
- Kudo, Taisei
- Hanshin Tigers
- 95 Catcher
- Kuki, Ryuhei
- YOKOHAMA DeNA BAYSTARS
- 149 Pitcher (*)
- Kumagai, Taiga
- Fukuoka SoftBank Hawks
- 4 Infielder
- Kumagai, Takahiro
- Hanshin Tigers
- 24 Infielder
- Kurebayashi, Kotaro
- ORIX Buffaloes
- 22 Pitcher
- Kuri, Allen
- ORIX Buffaloes
- 20 Pitcher
- Kuribayashi, Ryoji
- Hiroshima Toyo Carp
- 24 Infielder
- Kurihara, Ryoya
- Fukuoka SoftBank Hawks
- 1 Outfielder
- Kuriyama, Takumi
- Saitama Seibu Lions
- 57 Pitcher
- Kuroda, Masaya
- Saitama Seibu Lions
- 24 Pitcher
- Kurohara, Takumi
- Hiroshima Toyo Carp
- 24 Infielder
- Kurokawa, Fumiya
- Tohoku Rakuten Golden Eagles
- 54 Pitcher
- Kuroki, Yuta
- Saitama Seibu Lions
- 46 Pitcher
- Kuroyanagi, Kyosuke
- Hokkaido Nippon-Ham Fighters
- 14 Pitcher
- Kusaka, Sho
- Chunichi Dragons
- 45 Pitcher
- Kutani, Ryu
- Tohoku Rakuten Golden Eagles
- 7 Outfielder
- Kuwahara, Masayuki
- Saitama Seibu Lions
- 124 Infielder (*)
- Kuwahara, Shuji
- Fukuoka SoftBank Hawks
- 142 Pitcher (*)
- Kyazze, Fred
- Saitama Seibu Lions
- 9 Infielder
- Kyoda, Yota
- YOKOHAMA DeNA BAYSTARS
- 099 Pitcher (*)
- Kyomoto, Makoto
- Yomiuri Giants