Do Thi Hai Yen (born 1 October 1982) is a Vietnamese actress. She was born in Bac Ninh Province and grew up in Hanoi where she graduated from the Vietnamese Ballet School after seven years of study.In 1999, director Tran Anh Hung invited Hai Yen, only 17 at that time, to play a role in the film “The Vertical Ray of the Sun” (France). In 2000, Hai Yent appeared again in the film “Song of the Stork” (Singapore), by Nguyễn Phan Quang Bình (Vietnam) and Jonathan Foo (Singapore). The film received the "Best Feature Film" award at the Milan Film Festival in 2002 and was nominated for Grand Prix award at the Paris Film Festival in 2003. In 2001, Hai Yen became a leading actress in Vietnam when she was selected in a competition attended by more than 2,000 candidates in Vietnam and overseas to play the main female character next to two world-famous actors, Sir Michael Caine and Brendan Fraser, in The Quiet American directed by Phillip Noyce. It was the first time in Vietnam's history that a Vietnamese actress was selected as the main English-speaking character in a Hollywood film. As “The Quiet American” was screened in different countries around the world, Hai Yen was invited to attend many premier screenings and film festivals, in Australia,  Britain, the US, Italy, France, Spain, Germany, Yugoslavia, Japan, etc. Her name made the headlines of many popular broadcasters and newspapers such as CNN, Reuters, BBC, AP, ABC, Time, Newsweek, New York Times, New York Post, Variety or American Cinematographer. This exposure captured a lot of attention from the professional movie world. “The Quiet American” received the Academy Award Nomination, another ten wins and seven nominations at the BAFTA Awards, Golden Globes - USA, London Critics Circle Film Awards, National Board of Review - USA, Political Film Society - USA, San Francisco Film Critics Circle, Satellite Awards, Bangkok International Film Festival, Australian Screen Sound Guild, World Soundtrack Awards.in 2003. It was also elected as “One of the Year’s 10 Best!” films in 2003.

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