| Gabbud | Gabioud | Gagneux |
| Gaidon | Gailland | Gaěllard |
| Gaist | Galetti | Galladé |
| Gallay | Gallesy | Galley |
| Gambarri | Ganioz | Garaschod |
| Garbely | Gard | Garetti |
| Garěn | Garnier | Garny |
| Garrone | Gasner | Gasparini |
| Gaspoz | Gasser | Gatlen |
| Gattlen | Gattoni | Gaudard |
| Gaudin | Gauthier | Gauye |
| Gay | Gay-Balamaz | Gay-Crosier |
| Gay-des- | Gehrig | Geiger |
| Geli | Gemmet | Genetti |
| Genin | Genolet | Genoud |
| Gentinetta | Georges | Géraud |
| Gerfaux | Germanier | Germaniez |
| Germanini | Geropld | Geroudet |
| Gerster | Gertschen | Gerwer |
| Gex | Gex-Collet | Gex-Fabri |
| Gheri-Moro | Ghezzi | Ghiachino |
| Ghika | Giachetto | Gianadda |
| Giavina | Gibsten | Gietetaz |
| Gillabert | Gillet | Gilliet |
| Gillioz | Gindre | Giovagrandi |
| Giovani | Gěovanola | Girard |
| Giraud | Girod | Giroud |
| Gischig | Gitz | Glaisen |
| Glassey | Glassier | Glenz |
| Gobelet | Gollet | Gollut |
| Gon | Gonnet | Gorris |
| Gorsat | Gottet | Gcittier |
| Gottsponer | Goye | Graber |
| Grand | Grandi | Grandis |
| Grange | Granger | Granges |
| Granges (de) | Granges (des) | Gras |
| Grass | Gratzl | Graven |
| Gredig | Grenat | Grenon |
| Grept | Gresy (de) | Gretz |
| Greyloz | Grichting | Gričes (de) |
| Grillet | Grisogono (de) | Groely |
| Grolée (de) | Gross | Grossen |
| Grosset | Gruber | Grünwald |
| Gsponer | Gualino | Guchot |
| Guédon | Guérin | Gueron |
| Guerraty | Guex | Guex-Jorěs |
| Guido | Guigoz | Guillot |
| Gumpitsch | Gundi | Guntern |
| Gurten | Guttheil | Gy |