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| Full name | União Desportiva de Leiria |
|---|---|
| Nickname(s) | Os Lis (The ones from the Lis river) |
| Founded | 6 June 1966 |
| Ground | Estádio Dr. Magalhães Pessoa |
| Capacity | 23,888 |
| Chairman | Armando Marques |
| Manager | Filipe Cândido |
| League | Liga Portugal 2 |
| 2023–24 | 12th of 18 |
| Website | https://www.uniaodeleiria.pt |
União Desportiva de Leiria, commonly known as União de Leiria (pronounced [uniˈɐ̃w dɨ lɐjˈɾiɐ]), is a Portuguese professional football club based in Leiria. Founded on 6 June 1966, it currently plays in the Liga Portugal 2, holding home matches at Estádio Dr. Magalhães Pessoa, with a 23,888-seat capacity.