| Gekisō! Ruben Kaiser | October 10, 1977 | TV Asahi | 17 |
| Gekka Bijin | April 26, 2002 | — | 2 |
| Gemusetto Machu Picchu | April 1, 2019 | Adult Swim | 20 |
| Gen:Lock | January 26, 2019 | — | — |
| Gene Diver | April 4, 1994 | NHK Educational TV | 56 |
| Generation O! | August 26, 2000 | The WB | 13 |
| Generator Gawl | October 6, 1998 | TV Tokyo | 12 |
| Generator Rex | April 23, 2010 | Cartoon Network | 60 |
| Geneshaft | April 5, 2001 | WOWOW | 13 |
| Genesis Climber MOSPEADA | October 2, 1983 | Fuji Television | 25 |
| Genesis of Aquarion | April 4, 2005 | TV Tokyo | 26 |
| Genesis Survivor Gaiarth | — | — | — |
| Genie Family 2020 | April 11, 2020 | Yomiuri Telecasting Corporation | 20 |
| Genius? Dr. Hamax | October 6, 2007 | Family Gekijo | 12 |
| Genji Monogatari Sennenki | January 15, 2009 | Fuji Television | 11 |
| Genji Tsūshin Agedama | October 3, 1991 | — | — |
| Genki Bakuhatsu Ganbaruger | April 1, 1992 | TV Tokyo | 47 |
| Genmukan | March 21, 2003 | — | 2 |
| Genocyber | May 24, 1994 | — | 5 |
| Genshi Shōnen Ryū | October 30, 1971 | — | 22 |
| Genshiken | October 11, 2004 | — | 24 |
| Genshiken | December 22, 2006 | — | 3 |
| Genshiken: Second Generation | July 7, 2013 | Tokyo MX | — |
| Geo Mecha | — | — | — |
| Geobreeders 2: Breakthrough | July 26, 2000 | — | 4 |
| Geobreeders: File-X – Get Back the Kitty | May 21, 1998 | — | 3 |
| George and Martha | April 1, 1999 | YTV, Qubo, HBO Family | 26 |
| George of the Jungle | June 29, 2007 | Télétoon, Cartoon Network | 52 |
| George of the Jungle | September 9, 1967 | American Broadcasting Company | 17 |
| Geronimo Stilton | September 15, 2009 | Rai 2 | 78 |
| Geschichten aus Mullewapp | 2011 | — | — |
| Gestalt | January 22, 1997 | — | 2 |
| Get 'Em Tommy! | December 19, 2016 | Cartoon Network | — |
| Get Ace | January 19, 2014 | Network 10 | 52 |
| Get Blake! | March 2, 2015 | Gulli | 52 |
| Get Ed | September 19, 2005 | Jetix, Disney XD, Ajyal | 26 |
| Get Rolling With Otis | October 8, 2021 | Apple TV | 8 |
| GetBackers | October 5, 2002 | — | 49 |
| Getsumento Heiki Mina | January 13, 2007 | — | 11 |
| Getter Robo | April 4, 1974 | — | 51 |
| Getter Robo Armageddon | August 25, 1998 | — | 13 |
| Getter Robo G | May 15, 1975 | — | 39 |
| Getter Robo Go | February 11, 1991 | — | 50 |
| Ghost Concert: Missing Songs | April 6, 2026 | — | 12 |
| Ghost Hound | October 18, 2007 | WOWOW | 22 |
| Ghost Hunt | October 3, 2006 | — | 25 |
| Ghost in the Shell: Arise | — | — | — |
| Ghost in the Shell: Arise - Alternative Architecture | April 5, 2015 | Tokyo MX | 10 |
| Ghost in the Shell: SAC_2045 | April 23, 2020 | Netflix | 24 |
| Ghost in the Shell: Stand Alone Complex | October 1, 2002 | SkyChannel | 52 |
| Ghost Mecard | — | Daekyo Kids TV | — |
| Ghost Slayers Ayashi | October 7, 2006 | — | 25 |
| Ghost Stories | October 22, 2000 | Fuji Television | 20 |
| Ghost Sweeper Mikami | April 11, 1993 | — | 45 |
| Ghost Talker's Daydream | June 25, 2004 | — | 4 |
| Ghostbusters | September 8, 1986 | Broadcast syndication | 65 |
| GhostForce | 2021 | Disney Channel | 52 |
| Giant Beasts of Ars | January 7, 2023 | — | 12 |
| Giant Gorg | April 5, 1984 | TV Tokyo | 26 |
| Giant Killing | April 4, 2010 | NHK Satellite 2 Television, NHK Digital Satellite HD | — |