António Martins de Chaves (died 6 July 1447) was a Cardinal of the Catholic Church and bishop of Porto in Portugal.

He founded the church and hospice of San Antonio dei Portoghesi in 1440.

[2] He attended the Council of Basel as a representative of King Edward I of Portugal.

[3] Chaves was buried at the Archbasilica of St. John Lateran, where he was archpriest from 1444 to his death.

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