| Trigoniko | |
| Name Local: | Τριγωνικό |
| Type: | community |
| Coordinates: | 40.1108°N 21.9328°W |
| Periph: | Western Macedonia |
| Periphunit: | Kozani |
| Municipality: | Servia |
| Municunit: | Servia |
| Population As Of: | 2021 |
| Population: | 239 |
| Postal Code: | 50500 |
| Area Code: | +30 2464 |
Trigoniko (Greek, Modern (1453-);: Τριγωνικό) is a village located in Servia municipality, Kozani regional unit, in the Greek region of Macedonia. It is situated at an altitude of 750 meters above sea level. At the 2021 census the population was 239.
The regional capital, Kozani, is 41 km away.