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- (Mayo County) Glenisland
- (County Leitrim) Glenfarne
- (Mayo County) Glenamoy
- (County Leitrim) Glenade
- (County Leitrim) Glackaunadarragh
- (Sligo) Geevagh
- (County Galway) Garranty
- (Roscommon) Garranlahan
- (Mayo County) Garranard
- (County Galway) Garrafrauns
- (Mayo County) Gaghta Island
- (Mayo County) Gortmellia
- (County Leitrim) Glan Cross Roads
- (Roscommon) Grange Beg
- (Roscommon) Greaghnafarna
- (Roscommon) Greagh
- (Roscommon) Galley Bridge
- (Sligo) Greyfield
- (Sligo) Graniamore
- (Sligo) Glen
- (Sligo) Gortermone
- (Sligo) Gleneask
- (Sligo) Gortakeeran
- (Sligo) Glen
- (Sligo) Glackbaun
- (Sligo) Grogagh
- (County Leitrim) Gowel
- (County Leitrim) Greaghnaguillaun
- (County Leitrim) Greaghnafarna
- (County Leitrim) Garvagh