| Gaist Crusher | October 2, 2013 | TV Tokyo | — |
| Gakkatsu! | April 3, 2012 | NHK Educational TV | 25 |
| Gakkyū-ō Yamazaki | December 23, 1997 | TV Tokyo | — |
| Gakkō dewa Oshiete Kurenai Taisetsu na Koto | July 5, 2025 | — | — |
| Gakkō no Kowai Uwasa Shin: Hanako-san ga Kita!! | August 13, 2010 | — | 33 |
| Gakkō no Kowai Uwasa: Hanako-san ga Kita!! | August 15, 1994 | — | 35 |
| Gakuen Alice | October 30, 2004 | NHK Satellite 2 Television | 26 |
| Gakuen Heaven: Boy's Love Hyper | April 1, 2006 | AT-X | 13 |
| Gakuen Utopia Manabi Straight! | January 8, 2007 | — | 12 |
| Galactic Patrol Lensman | October 6, 1984 | — | 25 |
| Galactic Whirlwind Sasuraiger | April 5, 1983 | — | 43 |
| Galaxy Angel | April 7, 2001 | — | — |
| Galaxy Angel Rune | October 1, 2006 | — | 13 |
| Galaxy Cyclone Braiger | October 6, 1981 | — | 39 |
| Galaxy Express 999 | 1978 | — | — |
| Galaxy Kickoff!! | April 3, 2012 | NHK BS Premium | 39 |
| Galilei Donna | October 10, 2013 | Fuji Television | 11 |
| Gals Can't Be Kind to Otaku!? | April 8, 2026 | — | 12 |
| Gamba no Bōken | April 7, 1975 | — | 26 |
| Game Center Arashi | April 5, 1982 | Nippon Television | 26 |
| Gamers! | July 13, 2017 | — | 12 |
| Ganbare Genki | July 16, 1980 | — | 35 |
| Ganbare Gonbe | April 14, 1980 | — | 77 |
| Ganbare, Kickers! | October 15, 1986 | — | 26 |
| Ganbarist! Shun | July 1, 1996 | Yomiuri Telecasting Corporation | 30 |
| Ganglion | October 3, 2025 | — | — |
| Gangsta | July 1, 2015 | — | 12 |
| Gankutsuou: The Count of Monte Cristo | October 6, 2004 | — | 24 |
| Ganso Tensai Bakabon | October 6, 1975 | — | 103 |
| Gantz | April 13, 2004 | — | 26 |
| Gargantia on the Verdurous Planet | April 7, 2013 | — | 13 |
| Garo: The Animation | October 3, 2014 | — | — |
| Garo: The Crimson Moon | October 10, 2015 | — | — |
| Garo: Vanishing Line | October 6, 2017 | TV Tokyo | 24 |
| Garugaku.: Sei Girls Square Gakuin | April 6, 2020 | — | 50 |
| Gasaraki | October 4, 1998 | TV Osaka | 25 |
| Gatchaman Crowds | July 12, 2013 | — | 24 |
| Gatchaman Fighter | October 7, 1979 | Fuji Television | 48 |
| Gatchaman II | October 1, 1978 | Fuji Television | 52 |
| Gate | July 4, 2015 | — | 24 |
| Gate 2 | 2027 | — | — |
| Gate Keepers | April 3, 2000 | WOWOW | 24 |
| Gdgd Fairies | October 12, 2011 | — | 24 |
| Gdgd Men's Party | January 9, 2018 | — | — |
| Gear Fighter Dendoh | October 4, 2000 | TV Tokyo | 38 |
| GeGeGe no Kitarō | April 1, 2018 | — | 97 |
| GeGeGe no Kitarō | January 3, 1968 | — | 65 |
| GeGeGe no Kitarō | April 1, 2007 | — | 100 |
| GeGeGe no Kitarō | October 7, 1971 | — | 45 |
| GeGeGe no Kitarō | October 12, 1985 | — | 108 |
| GeGeGe no Kitarō | January 7, 1996 | — | 114 |
| Geisters | October 6, 2001 | TV Osaka | — |
| Gekidol | January 5, 2021 | — | 12 |
| Gekisō! Ruben Kaiser | October 10, 1977 | TV Asahi | 17 |
| Gene Diver | April 4, 1994 | NHK Educational TV | 56 |
| Generator Gawl | October 6, 1998 | TV Tokyo | 12 |
| Geneshaft | April 5, 2001 | WOWOW | 13 |
| Genesis Climber MOSPEADA | October 2, 1983 | Fuji Television | 25 |
| Genesis of Aquarion | April 4, 2005 | TV Tokyo | 26 |
| Genie Family 2020 | April 11, 2020 | Yomiuri Telecasting Corporation | 20 |