Keigo (written: 敬吾, 敬悟, 奎吾, 圭吾, 桂吾, 桂悟, 啓吾, 啓悟 or 慶悟) is a masculine Japanese given name. Notable people with the name include:
Keigo Abe (阿部 圭吾) (born 1938), Japanese karateka
Keigo Higashi (東 慶悟) (born 1990), Japanese footballer
Keigo Higashino (東野 圭吾) (born 1958), Japanese writer
Kiyoura Keigo (清浦 奎吾) (1850–1942), Japanese politician
Kotokasuga Keigo (琴春日 桂吾) (born 1977), Japanese sumo wrestler
Keigo Masuya (桝屋 敬悟) (born 1951), Japanese politician
Keigo Numata (沼田 圭悟) (born 1990), Japanese footballer
Ryōan Keigo (了庵 桂悟) (1425–1514), Japanese Zen Buddhist monk and diplomat
Keigo Seki (関 敬吾) (1899–1990), Japanese folklorist
Keigo Shimizu (清水 啓吾) (born 1939), Japanese swimmer
Keigo Sonoda (園田 啓悟) (born 1990), Japanese badminton player
Keigo Yamashita (山下 敬吾) (born 1978), Japanese Go player
