| Gaj-Grzmięca | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Kuyavian-Pomeranian |
| Subdivision Type2: | County |
| Subdivision Name2: | Brodnica |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Zbiczno |
| Coordinates: | 53.3425°N 19.4475°W |
| Pushpin Map: | Poland |
| Population Total: | 110 |
Gaj-Grzmięca (pronounced as /pl/) is a village in the administrative district of Gmina Zbiczno, within Brodnica County, Kuyavian-Pomeranian Voivodeship, in north-central Poland.[1] It lies 5km (03miles) east of Zbiczno, 110NaN0 north of Brodnica, and 660NaN0 north-east of Toruń.