Gaku Shindo (進藤 学, Shindō Gaku, born Hironobu Ninagawa (蜷川 博信, Ninagawa Hironobu) on January 7, 1980, in Tokyo, Japan) is a Japanese actor and singer. His debut role was as the Eagle Sazer in the tokusatsu series Chousei Kantai Sazer-X, but he is most well known for playing Harukaze Kurobane in the Prince of Tennis musicals in 2006.

Before he debuted in showbiz, he was a tango dancer and instructor.

• Onna rule as Jun (NTV, 2013)
• Shuchakueki Shirizu Ushio keiji VS jiken kisha Saeko 9-to (TV Asahi, 2012)
• Medical investigator Mr. Kazuichi Noguchi as Omiyama (Fuji TV, 2011)
• Kaizoku Sentai Gokaiger as Special Duty Officer Barizorg/Sid Bamick (TV Asahi, 2011)
• Majo Saiban (The Witch Trial) (Fuji TV, 2009)
• Oretachi wa Tenshi da! (TV Tokyo, 2009, ep 9)
• Gokusen 3 as Narita (NTV, 2008, ep 5)
• Tokyo Ghost Trip as 'Reaper' (Tokyo MX, 2008)
• Guren Onna as 'Kenduka Kogoro' (TV Tokyo, 2008)
• Four Lies as 'Sakamoto' (TV Asahi, July - December 2008)
• Fuma no Kojiro as 'Ryoma' (Tokyo MX, 2007)
• Sakurasho no Onnatachi (Women Police Sakura) as 'Yamato Sho' (TV Asahi, 2007)
• Happy Boys as 'Inada Gen/Silk' (TV Tokyo, 2007)
• Doyo Wide Gekijo (Saturday Wide Theater: in 'Disguise' 3) as 'Investigator Aso Yuki' (TV Asahi, 2006)
• Aru Ai no Uta (Love Story) (TBS, 2006)
• Chousei Kantai Sazer-X as 'Ad'/Eagle Sazer (TV Tokyo, Nov 2005 - June 2006)

• Kaizoku Sentai Gokaiger the Movie: The Flying Ghost Ship as Special Duty Officer Barizorg (voice) (2011)
• Gokaiger Goseiger Super Sentai 199 Hero Great Battle as Special Duty Officer Barizorg (voice) (2011)
• Toricon!!! Triple Complex Returns as Esu/'Ace' (2008)
• Toricon!!! Triple Complex as Esu/'Ace' (2008)
• Chousei Kantai Sazer X - Tatakae! Hoshi no Senshitachi (Toho, 2005)

• Today's Health (NHK, April 2006 - March 2007)
• Eight men & women entertainers desert island castaway Diary (TV Tokyo, 2006)
• Waratte Ii tomo! You're Laughing! (Fuji TV, 2006)

• Snow White (2011)
• La Corda d’oro as Kanazawa Hiroto (Kanayan) (2010)
• Murder Factory (2010)
• Knock Out Brother X (2009)
• Letter as 'Takeshi Shima' (2008)
• Fuma no Kojiro - the musical as 'Ryoma' (2007)
• PIPPIN - broadway musical (2007)
• Tennis no Ojisama Prince of Tennis as 'Kurobane Harukaze' (2006)

• MRW (March 2007 - May 2008)
• MRW-X (currently ongoing from April 2008)

• MRW Mini Album - Shindo Gaku, Kiriyama Ren & Chieko Higuchi (Feb 27, 2008)

• Toricon!!! Triple Complex' original soundtrack (2008)
• 'Fuma no Kojiro' original soundtrack (Dec, 2007)
• 'Happy Boys' Image Collection 4 - Inada Gen (Shindo Gaku) (May, 2007)
• 'Prince of Tennis' musical best actor's series 006 - IRE as 'Amane Hikaru' & Shindo Gaku as 'Kurobane Harukaze' (Dec, 2006)

• 'Happy Boys' File. 1 - Kyoichi & Gen (Sept, 2007)
• Men's DVD series: R - Shindo Gaku (Feb, 2007)

• 'Beside on You' - Toricon!!! Triple Complex
• 'Shut it into the mirror' (Ryoma) - Fuma no Kojiro
• 'Tenshi no Namida' - Happy Boys

• Majestic (2007)

• TANGORIBERUTA (2003)
• Argentinian tango at a dinner party

He also appeared in other tango events as a professional dancer.

• Official site (Ohta Productions) (Japanese)
• Official blog (Japanese)