Mário Gentil Quina, GOIH (1 January 1930 – 8 September 2017) was a Portuguese sailor.

In 1972 he took part in the three-person keelboat event, together with his another brother Francisco Quina and finished 21st.

[3] Quina mostly competed in the star class (doubles) and participated in seven world championships between 1953 and 1967.

He won a bronze medal in this category at the 1965 European Championships.

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