| Official Name: | Tretnikovo |
| Native Name: | Третниково |
| Settlement Type: | Village |
| Pushpin Map: | Russia Vologda Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Vologda Oblast |
| Subdivision Name3: | Gryazovetsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 58.6°N 50°W[1] |
Tretnikovo (Russian: Третниково) is a rural locality (a village) in Rostilovskoye Rural Settlement, Gryazovetsky District, Vologda Oblast, Russia. The population was 1 as of 2002.[2]
Tretnikovo is located 39 km south of Gryazovets (the district's administrative centre) by road. Nefedovo is the nearest rural locality.[3]