| Name | | Founded | Date of Meeting | | Installation | Place of Meeting |
| Excelsior No 617 | | 1853 | 3rd Thursday April to November | | June | Perú 1134, Buenos Aires, Argentina |
| Silver River No 876 | | 1861 | 3rd Monday March to November | | June | Canelones 1425, Montevideo, Uruguay |
| Lodge Star of the South No 1025 | | 1864 | 1st Monday March to November | | June | Perú 1134, Buenos Aires, Argentina |
| Lodge of Harmony No 1411 | | 1872 | 2nd Tuesday, April to December | | April | Wagner 179, Valparaíso, Chile |
| Southern Cross Lodge No 1740 | | 1878 | 3rd Saturday, month 4, 5, 10 and 11 | | November | Bellmont 5178 Cruz Grande, Córdova, Argentina |
| The Pampa Lodge No 2329 | | 1889 | 4th Friday, April to October and 3rd Monday, November | | October | Perú 1134, Buenos Aires, Argentina |
| St. John's Lodge No 2517 | | 1894 | 1st Tuesday, April to November | | July | Colombres 146, Lomas de Zamora, Argentina |
| Trevor Mold Lodge No 3293 | | 1908 | 4th Wednesday May, August and November | | August | Perú 1134, Buenos Aires, Argentina |
| Belgrano Lodge No 3466 | | 1910 | 3rd Friday April, June, August, October and 4th Friday November | | October | Perú 1134, Buenos Aires, Argentina |
| Columbia Lodge No 4682 | | 1924 | 3rd Tuesday April to November | | May | Perú 1134, Buenos Aires, Argentina |
| Old Georgian Lodge No 5104 | | 1929 | 2nd Friday April to November | | September | Perú 1134, Buenos Aires, Argentina |
| River Plate Lodge No 7888 | | 1963 | 3rd Tuesday April to November | | May | Paseo Victoria 156, Tigre, Argentina |