Oscar Quiñones (born 14 January 1941, Lima) a Peruvian chess master.
He took 9th at Lima 1959 (Borislav Ivkov and Pachman won), took 15th at Mar del Plata 1961 (Miguel Najdorf won), tied for 3rd-5th at Fortaleza 1963 (zonal, Hector Rossetto won) and won at Rio de Janeiro 1964 (zonal playoff), took 20th at Amsterdam 1964 (interzonal).
He took 5th at Santiago de Chile 1965 (Vassily Smyslov won), tied for 11-13th at Rio Hondo 1966 (zonal), tied for 11-12th at São Paulo 1972 (zonal, Henrique Mecking won), took 11th at Camaguey 1974 (11th Capablanca Memorial, B tournament, Raymond Keene won), tied for 5-7th at Cienfuegos 1976 (13th Capablanca Memorial, C tournament).
Quiñones played for Peru in Chess Olympiads:
In 1964, at first board in 16th Olympiad in Tel Aviv (+5 –7 =7);
In 1970, at third board in 19th Olympiad in Siegen (+7 –5 =4);
In 1972, at second board in 20th Olympiad in Skopje (+6 –5 =6).
Awarded the IM title in 1964.