Greek Catholic Union of the USA
| Established | February 14, 1892 |
|---|---|
| Founded at | Wilkes-Barre, Pennsylvania, United States |
| Type | Mutual aid society |
Area served | United States |
| Website | gcuusa |
Formerly called | Greek Catholic Union of Rusyn Brotherhoods in the USA |
The Greek Catholic Union of the USA (GCU) is the oldest continuous fraternal benefit society for Rusyn immigrants and their descendants in the United States, and established a Byzantine Catholic Church, Saint Nicholas Chapel, near their home office in Beaver, Pennsylvania.