| Giant Ojō-sama | January 2027 | — | — |
| Giant Robo | July 22, 1992 | — | 7 |
| Gibiate | July 15, 2020 | — | 12 |
| Gibo no Toiki: Haitokushin ni Tadayō Haha no Iroka | May 25, 2006 | — | 2 |
| Gideon | — | TF1 | 60 |
| Gifted | 2027 | — | — |
| Gifū Dōdō!! Kanetsugu to Keiji | July 3, 2013 | — | 25 |
| GigaBlaster | June 17, 2019 | Gloob | 104 |
| GigaBuilder | — | EBS 1TV | 20 |
| Gigant Big-Shot Tsukasa | April 1, 2014 | — | — |
| Gigantor | October 20, 1963 | Fuji Television | 97 |
| Gigantosaurus | January 18, 2019 | Disney Channel, Disney Jr., France 5 | 26 |
| Gigglebug | — | — | 39 |
| Gilgamesh | October 2, 2003 | — | 26 |
| Gilligan's Planet | September 18, 1982 | CBS | 13 |
| Gin'iro no Olynssis | October 6, 2006 | — | — |
| Ginban Kaleidoscope | October 8, 2005 | TV Tokyo | 12 |
| Ginga Hyōryū Vifam | October 21, 1983 | MBS | 46 |
| Ginga Sengoku Gun'yūden Rai | April 8, 1994 | TV Tokyo | 52 |
| Ginger Snaps | — | American Broadcasting Company | 10 |
| Gingitsune | October 7, 2013 | — | 12 |
| Gino the Chicken: lost in the net | 2006 | — | — |
| Gintama | April 4, 2006 | TV Tokyo | 353 |
| Gintama: Mr. Ginpachi's Zany Class | October 7, 2025 | — | — |
| Girl Crush | — | — | — |
| Girl Friend Beta | October 13, 2014 | — | 12 |
| Girlfriend, Girlfriend | July 3, 2021 | — | 24 |
| Girlish Number | October 7, 2016 | — | 12 |
| Girls Band Cry | April 6, 2024 | — | 13 |
| Girls Beyond the Wasteland | January 7, 2016 | — | 12 |
| Girls Bravo | July 6, 2004 | — | 24 |
| Girls of Olympus | — | RaiPlay | 26 |
| Girls und Panzer | October 8, 2012 | — | 12 |
| Girls und Panzer das Finale | — | — | — |
| Girls und Panzer: Motto Love Love Sakusen Desu! | — | — | — |
| Girls' Frontline | January 8, 2022 | — | — |
| Girls' Last Tour | October 6, 2017 | — | 12 |
| Girlstuff/Boystuff | 2002 | Nicktoons, Nick Jr., YTV | 33 |
| Girly Air Force | January 10, 2019 | AT-X | 12 |
| Given | July 11, 2019 | — | 11 |
| GJ Club | January 10, 2013 | Nippon Television | 12 |
| Gladiator Academy | 2002 | — | 26 |
| Glammys School of Fashion Vlog | — | — | — |
| Glamorous Heroes | October 7, 2017 | — | — |
| Glass Fleet | April 4, 2006 | — | 26 |
| Glass Maiden | April 8, 2008 | — | — |
| Glass Mask | April 9, 1984 | Nippon Television | 22 |
| Glass Mask | April 6, 2005 | TV Tokyo | 51 |
| Glass no Kamen desu ga | April 7, 2013 | — | 3 |
| Glass no Kamen desu ga Z | April 28, 2013 | — | 14 |
| Glasses with a Chance of Delinquent | 2027 | — | — |
| Glasslip | July 3, 2014 | Tokyo MX | 13 |
| Gleipnir | April 5, 2020 | — | 13 |
| Glenn Martin, DDS | August 17, 2009 | Nickelodeon, Nick at Nite | 40 |
| Glitch Techs | February 21, 2020 | Netflix | 19 |
| Gloomy the Naughty Grizzly | April 12, 2021 | — | 12 |
| Glumpers | — | — | 104 |
| Gnosia | October 12, 2025 | — | 21 |
| Go Astro Boy Go! | 2019 | — | 52 |
| Go Away, Unicorn! | September 7, 2018 | — | 15 |