Keitarō is a Japanese given name. The spelling varies.
People 啓太郎 Keitarō Arima (born 1969), manga artist, author of Tsukuyomi -Moon Phase- among others Izawa Keitaro, member of Appa and the band Tokyo Incidents
慶太郎 Motonaga Keitaro, director of the anime To Heart: Remember My Memories, Amaenaideyo!!, Lovely Idol, Iczer Girl Iczelion, Kikaider 01: The Animation, Yumeria, GetBackers, Magic Knight Rayearth OVA and School Days
敬太郎 Keitarō Takanami, founder and former member of pop group Pizzicato Five
To be sorted Kondo Keitaro, author, recipient of the Akutagawa Prize Keitaro Konnai (born 1978), swimmer Keitaro Hara, chief equipping officer on the Japanese cruiser Haguro and later captain of Japanese battleship Ise and then Japanese battleship Nagato Keitaro Hoshino (born 1969), boxer Inoue Keitaro, martial artist, see Tenjin Shin'yō-ryū Keitaro Miho, one of the composers for the film Les plus belles escroqueries du monde
Characters 景太郎 Keitarō Urashima, main protagonist of the manga Love Hina
敬太郎 Keitarō Shido, character in the tokusatsu television series Kamen Rider (Skyrider) Keitarō Jin, character in the tokusatsu television series Kamen Rider X Takeda Keitarou, character in the manga Majin Tantei Nōgami Neuro
啓太郎 Keitarō Kikuchi, character in the tokusatsu television series Kamen Rider 555
To be sorted Keitarō Kiyomasa, character in the manga The Kindaichi Case Files. Keitarō Mizuno, character in the anime Texhnolyze. Keitaro Sasakawa, character in the drama series Tokyo Friends. Keitarō Toukichi, character in the manga Princess Comet.