Keisuke (written: 京佑, 圭佑, 惠佑, 佳祐, 慶祐, 圭祐, 敬佑, 馨祐, 敬輔, 恵輔, 圭輔, 敬典, 恵介, 啓介, 慶介, 健介, 敬介, 圭介, 啓介, 銈介, 敬介, 敬助 or 圭亮) is a masculine Japanese given name and may refer to:
- Keisuke Andrew (born 1978), Japanese American mixed martial artist
- Keisuke Endo (遠藤 敬佑?) (born 1989), Japanese footballer
- Keisuke Fujie (藤江 恵輔?) (1885–1969), Japanese general
- Keisuke Fujiwara (藤原 敬典?) (born 1982), Japanese mixed martial artist
- Keisuke Funatani (船谷 圭祐?) (born 1986), Japanese footballer
- Keisuke Hada (羽田 敬介?) (born 1978), Japanese footballer
- Keisuke Harada (原田 圭輔?) (born 1988), Japanese footballer
- Keisuke Hayasaka (早坂 圭介?) (born 1984), Japanese baseball player
- Keisuke Hayashi (林 佳祐?) (born 1988), Japanese footballer
- Keisuke Hoashi (born 1967), American actor
- Keisuke Honda (本田 圭佑?) (born 1986), Japanese footballer
- Keisuke Hoshino (星野 圭佑?) (born 1985), Japanese footballer
- Keisuke Ishida (石田 圭祐?) (born 1955), Japanese actor and voice actor
- Keisuke Itagaki (板垣 恵介?) (born 1957), Japanese manga artist
- Itai Keisuke (板井 圭介?) (born 1956), Japanese sumo wrestler
- Keisuke Ito (伊藤 圭介?) (1803–1901), Japanese physician and biologist
- Keisuke Ito (swimmer) (伊藤 圭祐?) (1943–2006), Japanese swimmer
- Keisuke Iwashita (岩下 敬輔?) (born 1986), Japanese footballer
- Keisuke Kaneko (金子 圭輔?) (born 1985), Japanese baseball player
- Keisuke Kato (加藤 慶祐?) (born 1988), Japanese actor
- Keisuke Katto (甲藤 啓介?) (born 1983), Japanese baseball player
- Keisuke Kihara (木原 敬介?) (born 1939), Japanese politician
- Keisuke Kimoto (木本 敬介?) (born 1984), Japanese footballer
- Keisuke Kinoshita (木下 恵介?) (1912–1998), Japanese film director
- Keisuke Koide (小出 恵介?) (born 1984), Japanese actor
- Keisuke Kumakiri (熊切 圭介?) (born 1934), Japanese photographer
- Keisuke Kumazawa (熊澤 圭祐?) (born 1989), Japanese footballer
- Keisuke Kunimoto (国本 京佑?) (born 1989), Japanese-Korean racing driver
- Keisuke Kurihara (栗原 圭介?) (born 1973), Japanese footballer
- Keisuke Kuwata (桑田 佳祐?) (born 1956), Japanese musician and singer-songwriter
- Keisuke Makino (born 1969), Japanese footballer
- Keisuke Minami (南 圭介?) (born 1985), Japanese actor and singer
- Keisuke Mori (森 惠佑?) (born 1980), Japanese footballer
- Keisuke Moriya (森谷 佳祐?) (born 1986), Japanese footballer
- Keisuke Naito (内藤 圭佑?) (born 1987), Japanese footballer
- Keisuke Ogawa (小川 啓介?) (born 1986), Japanese footballer
- Keisuke Ogihara (荻原 イルマリ 恵介?) (born 1975), Japanese musician
- Keisuke Okada (岡田 啓介?) (1868–1952), Japanese admiral, politician and Prime Minister of Japan
- Keisuke Okuno (born 1965), Japanese swimmer
- Keisuke Ota (太田 恵介?) (born 1979), Japanese footballer
- Keisuke Ota (footballer born 1981) (太田 圭輔?), Japanese footballer
- Ōtori Keisuke (大鳥 圭介?) (1833–1911), Japanese military commander
- Keisuke Sawaki (born 1943), Japanese long-distance runner
- Keisuke Sekiguchi (関口 圭亮?) (born 1986), Japanese footballer
- Keisuke Serizawa (芹沢 銈介?) (1895–1984), Japanese textile designer
- Keisuke Shimizu (清水 圭介?) (born 1988), Japanese footballer
- Keisuke Suzuki (鈴木 馨祐?) (born 1977), Japanese politician
- Keisuke Tanimoto (谷元 圭介?) (born 1985), Japanese baseball player
- Keisuke Tsuboi (坪井 慶介?) (born 1979), Japanese footballer
- Keisuke Tsumura (津村 啓介?) (born 1971), Japanese politician
- Keisuke Ushiro (born 1986), Japanese decathlete
- Yamanami Keisuke (山南 敬助?) (1833–1865), Japanese samurai
- Keisuke Yoshida (吉田 恵輔?) (born 1975), Japanese film director and screenwriter
Fictional characters:
- Keisuke Miyagi (宮城 健介?), character in The Karate Kid series