Back Club Social y Atlético Guillermo Brown Catalan Club Social y Atlético Guillermo Brown Spanish Klub Guillermo Brown ID Club Social y Atlético Guillermo Brown Italian Club Guillermo Brown Polish Club Social y Atlético Guillermo Brown Portuguese
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| Full name | Club Social y Atlético Guillermo Brown | |||
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| Nickname(s) | La Banda Capo Del Sur La Banda del Sur | |||
| Founded | January 14, 1945 | |||
| Ground | Estadio Raul Conti, Puerto Madryn Chubut, Argentina | |||
| Capacity | 15,000 | |||
| Chairman | Carlos Eliceche | |||
| Manager | Andrés Yllana | |||
| League | Primera Nacional | |||
| 2023 | Primera Nacional Zone A, 16th | |||
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Club Social y Atlético Guillermo Brown, mostly known as Guillermo Brown or Brown de Puerto Madryn, is an Argentine sports club from Puerto Madryn in Chubut Province. The football team currently plays in the Primera B Nacional.