| Affiliation ID | 2077 |
|---|---|
| Full name | Real Unión Club de Irún |
| Short name | Real Unión |
| Place | Irún (ESP) |
| Sports | ATH/FBL |
| Notes | Founded as a merger of Irún Sporting Club and Racing Club de Irún in 1915. Known as Unión Club Irún before royal approval. |
| Patricio Arabolaza |  ESP |
FBL | Olympics | 1920 |
| Ramón Eguiazábal | ESP |
FBL | Olympics | 1920 |
| Román Emery | ESP |
FBL | Non-starter | 1920 |
| Patxi Gamborena | ESP |
FBL | Olympics | 1924—1928 |
| Fernando Labourdette | ESP |
ATH | Olympics/Non-starter | 1924—1928 |
| Luis Regueiro | ESP |
FBL | Olympics | 1928 |
| Manuel Sagarzazu | ESP |
FBL | Non-starter | 1928 |
| Alberto Villaverde | ESP |
FBL | Non-starter | 1928 |
