Marvin Neil Simon (4 Temmuz 1927, Bronx - 26 Ağustos 2018, Manhattan), Amerikalı oyun yazarı, senarist.
Amerika'nın ünlü oyun yazarlarından olan Simon 1944-1946 yılları arasında New York Üniversitesi ve Denver Üniversitesi'nde eğitim gördü. Warner Brothers'da radyo-tv yazarlığı yapan kardeşiyle birlikte CBS stüdyolarında çalışmaya başladı. İlk oyunu 1961 yılında sahnelendi. Broadway'de kendi adına açılan bir tiyatro sahnesi bulunan yazar, düşündürücü konular içeren, yaşadığı gençlik döneminde insan ilişkileri, güncel yaşam ve evlilik gibi temaları, güldürü biçiminde ele almıştır. Aynı yılda dört ayrı oyununun Broadway'de sahnelenmesi ile rekor kırmıştır.
Elaine Joyce (1999), Diane Lander (1990-1998), Marsha Mason (1973-1981) ve Joan Baim (1953-1973) ile dört evlilik yapan Simon birçok ödül sahibidir. Yazar 26 Ağustos 2018'de Manhattan, New York, ABD'de 91 yaşında ölmüştür.

Ödülleri

1965 Tony Ödülü for Best Author - The Odd Couple
1967 Evening Standard Award - Barefoot in the Park
1978 Altın Küre Ödülü for Best Motion Picture Screenplay - The Goodbye Girl
1985 Tony Award for Best Play - Biloxi Blues
1989 American Comedy Awards Lifetime Achievement
1991 Drama Desk Award for Outstanding New Play - Lost in Yonkers
1991 Pulitzer Ödülü for Drama - Lost in Yonkers
1991 Tony Award for Best Play - Lost in Yonkers
1995 Kennedy Center Honors|Kennedy Center Honoree
2006 Mark Twain Prize for American Humor

Senaryoları

1963: Come Blow Your Horn - Director: Bud Yorkin, screenplay by Norman Lear with Frank Sinatra and Lee J. Cobb
1966: After the Fox - Director: Vittorio DeSica with Peter Sellers and Victor Mature
1967: Barefoot in the Park - Director: Gene Saks with Robert Redford and Jane Fonda
1968: The Odd Couple - Director: Gene Saks with Jack Lemmon and Walter Matthau
1969: Sweet Charity - Director: Bob Fosse with Shirley MacLaine, Chita Rivera and Sammy Davis Jr.
1970: The Out-of-Towners - Director: Arthur Hiller with Jack Lemmon
1971: Plaza Suite - Director: Arthur Hiller with Walter Matthau
1972: The Last of the Red Hot Lovers - Director: Gene Saks with Alan Arkin
1972: The Heartbreak Kid - Director: Elaine May with Cybill Shepard and Charles Grodin
1975: The Prisoner of Second Avenue - Director: Melvin Frank with Jack Lemmon and Anne Bancroft
1975: The Sunshine Boys - Director: Herbert Ross with Walter Matthau and George Burns
1976: Murder by Death - Director: Robert Moore with Truman Capote, Peter Falk, Alec Guinness, David Niven and Peter Sellers
1977: The Goodbye Girl - Director: Herbert Ross with Richard Dreyfuss and Marsha Mason
1978: The Cheap Detective - Director: Robert Moore with Peter Falk, Louise Fletcher, Stockard Channing, Madeline Kahn, John Houseman, Nicol Williamson and Eileen Brennan
1978: California Suite - Director: Herbert Ross with Jane Fonda, Alan Alda, Maggie Smith, Michael Caine, Walter Matthau, Richard Pryor and Bill Cosby
1980: Seems Like Old Times - Director: Jay Sandrich with Goldie Hawn and Chevy Chase
1982: I Ought To Be In Pictures - Director: Herbert Ross with Walter Matthau
1982: Sonny Boys - Director: Rolf von Sydow with Carl-Heinz Schroth and Johannes Heesters
1983: Max Dugan Returns - Director: Herbert Ross with Matthew Broderick, Marsha Mason, Jason Robards, Kiefer Sutherland and Donald Sutherland
1984: The Lonely Guy - Director: Arthur Hiller with Steve Martin
1985: The Slugger's Wife - Director: Hal Ashby with Michael O'Keefe and Rebecca De Mornay
1986: Brighton Beach Memoirs - Director: Gene Saks with Jonathan Silverman and David Margulies
1988: Biloxi Blues - Director: Mike Nichols with Matthew Broderick and Christopher Walken
1991: The Marrying Man - Director: Jerry Rees with Kim Basinger and Alec Baldwin
1993: Lost in Yonkers - Director: Martha Coolidge with Richard Dreyfuss
1995: The Sunshine Boys - Director: John Erman with Woody Allen and Peter Falk
1998: The Odd Couple II - Director: Howard Deutch with Jack Lemmon and Walter Matthau
2001: Sonny Boys - Director: Jörg Hube with Werner Schneyder and Dieter Hildebrandt
2004: The Goodbye Girl with Patricia Heaton and Jeff Daniels for Turner Network Television