António Manuel Frasco Vieira (born 16 January 1955), known as Frasco, is a Portuguese former footballer who played as an attacking midfielder.
Best known for his 11-year spell with Porto, he appeared in more than 300 official matches for the club and won a total of 13 major titles.
He was chosen by Portuguese sports newspaper Record as one of the best 100 Portuguese football players ever.
Frasco earned more than 20 caps for Portugal, representing the nation at Euro 1984.