Maria Cornelia Vreeken (born 22 December 1928), née Corry Bouwman, also Corry Vreeken-Bouwman, is a Dutch chess player who holds the title of Woman Grandmaster (WGM, 1987). She is a five-time winner of the Dutch Women's Chess Championship (1960, 1962, 1964, 1966, 1970).

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Corry Vreeken
Vreeken in 1982
Full name	Maria Cornelia Vreeken
Country	Netherlands
Born	(1928-12-22) December 22, 1928 (age 95) Enkhuizen, Netherlands
Title	Woman Grandmaster (1987)
Peak rating	2180 (July 1989)

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In the 1960s and 1970s, Corry Vreeken was one of the leading Dutch women's chess players. She is five time Dutch Women's Chess Champion: 1960, 1962, 1964, 1966 and 1970,^[1] and participated in many international chess tournaments. Her best results were in Emmen (1962), shared 1st - 3rd place in Beverwijk (1968) and won zonal tournament in Biel/Bienne (1980).

Corry Vreeken two times participated in the Women's World Chess Championship Interzonal Tournaments:

• In 1971, at Interzonal Tournament in Ohrid ranked 14th place;^[2]
• In 1976, at Interzonal Tournament in Rozendaal ranked 10th place.^[3]

Corry Vreeken played for Netherlands in the Women's Chess Olympiads:^[4]

• In 1963, at first board in the 2nd Chess Olympiad (women) in Split (+1, =5, -4),
• In 1966, at first board in the 3rd Chess Olympiad (women) in Oberhausen (+5, =3, -2),
• In 1974, at first board in the 6th Chess Olympiad (women) in Medellín (+4, =4, -3),
• In 1976, at second board in the 7th Chess Olympiad (women) in Haifa (+4, =2, -3),
• In 1978, at second board in the 8th Chess Olympiad (women) in Buenos Aires (+5, =4, -2),
• In 1980, at first board in the 9th Chess Olympiad (women) in Valletta (+4, =4, -3),
• In 1982, at first board in the 10th Chess Olympiad (women) in Lucerne (+2, =2, -6).

In 1968 she was awarded the FIDE Woman International Master (WIM) title and in 1987 the Woman Grandmaster (WGM) honorary title.