| Název | Obyvatele | Nad. výška | Souřadnice | 
| Gargakoyu (Gargaköyü) | 
 | 99 m | 40°49' N; 30°1' E | 
| Gebze (Gebze) | 281 585 | 162 m | 40°47' N; 29°25' E | 
| Gemicipinar | 
 | 121 m | 41°7' N; 30°11' E | 
| Gencali | 
 | 126 m | 41°6' N; 30°1' E | 
| Gerdeli | 
 | 48 m | 41°6' N; 29°52' E | 
| Geredeli | 
 | 48 m | 41°6' N; 29°52' E | 
| Geulzuk (Geulzuk) | 56 189 | 5 m | 40°43' N; 29°49' E | 
| Ghonja Koi (Ghonja Köi) | 
 | 425 m | 40°42' N; 29°46' E | 
| Gokceoren (Gökçeören) | 
 | 300 m | 40°51' N; 30°1' E | 
| Gokceviran (Gökçeviran) | 
 | 300 m | 40°51' N; 30°1' E | 
| Golcuk (Gölcük) | 56 201 | 5 m | 40°43' N; 29°49' E | 
| Guebze | 
 | 
 | 40°47' N; 29°25' E | 
| Gundogdu | 
 | 87 m | 40°47' N; 29°57' E | 
| Guvercinlik (Güvercinlik) | 
 | 229 m | 40°52' N; 30°10' E | 
| Guzelkiyi | 
 | 
 | 40°42' N; 29°40' E | 
| Guzeltepe (Güzeltepe) | 
 | 161 m | 40°50' N; 29°23' E | 
| Guzelyali | 
 | 157 m | 40°42' N; 29°40' E | 
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