| Year | Event/Crosstable | Champions |
| 2021 | 56th American Open | GM Melik Khachiyan (USA) & WIM Ashritha Eswaran (USA) |
| 2019 | 55th American Open | IM Cameron Wheeler (USA) & IM Justin Sarkar (USA) |
| 2018 | 54th American Open | IM John D. Bryant & FM Danial Asaria (USA) |
| 2017 | 53rd American Open | GM Vladimir Belous (Russia) |
| 2016 | 52nd American Open | GM Timur Gareyev & IM John D. Bryant (USA) |
| 2015 | 51st American Open | GM Varuzhan Akobian & IM Dionisio Aldama (Mexico) |
| 2014 | 50th American Open | GM Timur Gareyev (USA) |
| 2013 | 49th American Open | GM Timur Gareyev (USA) & GM Mackenzie Molner (USA) |
| 2012 | 48th American Open | GM Melikset Khachiyan |
| 2011 | 47th American Open | GM Varuzhan Akobian |
| 2010 | 46th American Open | GM Joshua E Friedel (USA), IM Enrico Sevillano (USA), & GM Melikset Khachiyan |
| 2009 | 45th American Open | GM Melikset Khachiyan, IM Andranik Matikozian (Armenia), & NM Julian Landaw (USA) |
| 2008 | 44th American Open | GM Melikset Khachiyan |
| 2007 | 43rd American Open | GM Alex Yermolinsky (USA) |
| 2006 | 42nd American Open | GM Melikset Khachiyan & IM David Pruess (USA) |
| 2005 | 41st American Open | IM Vladimir Mezentsev (Russia) |
| 2004 | 40th American Open | GM Melikset Khachiyan |
| 2003 | 39th American Open | GM Suat Atalik (Serbia), IM Varuzhan Akobian (USA), & GM Pavel Blatny |
| 2002 | 38th American Open | GM Yury Shulman & GM Pavel Blatny |
| 2001 | 37th American Open | GM Melikset Khachiyan (USA) |
| 2000 | 36th American Open | IM Andranik Matikozian (Armenia) |
| 1999 | 35th American Open | GM Eduard Gufeld |
| 1998 | 34th American Open | GM Pavel Blatny (Czech Republic) & FM Cyrus Lakdawala |
| 1997 | 33rd American Open | Alexander Goldin, GM Walter Browne, & GM Igor Ivanov |
| 1996 | 32nd American Open | GM Alex Yermolinsky (USA) |
| 1995 | 31st American Open | GM Igor Ivanov |
| 1994 | 30th American Open | GM Dmitry Gurevich (USA) |
| 1993 | 29th American Open | GM Loek Van Wely (Netherlands) |
| 1992 | 28th American Open | IM David Strauss (USA), IM Jeremy Silman (USA),
IM Cris A Ramayrat (Philippines), & IM Anthony F Saidy (USA) |
| 1991 | 27th American Open | GM Joel Benjamin (USA) |
| 1990 | 26th American Open | GM Walter Browne, & GM Igor Ivanov |
| 1989 | 25th American Open | IM Gata Kamsky (USA), GM Larry Christiansen (USA),
GM Maxim Dlugy (USA), GM Walter Browne, GM Boris Gulko |
| 1988 | 24th American Open | IM Jack Peters (USA) |
| 1987 | 23rd American Open | GM Yasser Seirawan |
| 1986 | 22nd American Open | GM Lev Alburt (USA), GM Walter Browne (USA), GM Boris Gulko (USA) |
| 1985 | 21st American Open | GM Yasser Seirawan (USA), GM Igor Ivanov (Canada), & IM David Strauss (USA) |
| 1984 | 20th American Open | IM Jack Peters (USA) & GM Igor Ivanov (Canada) |
| 1983 | 19th American Open | GM Larry Christiansen (USA), IM David Strauss (USA), & IM Nikolay Minev (USA) |
| 1982 | 18th American Open | IM Jack Peters (USA), GM James Tarjan (USA), & IM Ian Rogers (Australia) |
| 1981 | 17th American Open | IM Nick de Firmian (USA) & IM John Watson (USA) |
| 1980 | 16th American Open | GM Walter Browne (USA), IM John Grefe (USA), & NM David Strauss (USA) |
| 1979 | 15th American Open | NM Perry Youngworth (USA) |
| 1978 | 14th American Open | NM David Strauss (USA) & Paul Whitehead |
| 1977 | 13th American Open | NM Jack Peters (USA) & Cicero Braga (Brazil) |
| 1976 | 12th American Open | NM Yasser Seirawan (USA), John Pike, & GM Walter Browne (USA) |
| 1975 | 11th American Open | NM Kim Commons & NM David Strauss (USA) |
| 1974 | 10th American Open | IM Peter Biyiasas and NM Kim Commons |
| 1973 | 9th American Open | IM James Tarjan (USA) |
| 1972 | 8th American Open | Larry Remlinger (USA) |
| 1971 | 7th American Open | Carl Pilnick |
| 1970 | 6th American Open | GM Robert Byrne |
| 1969 | 5th American Open | NM Ray Martin |
| 1968 | 4th American Open | James Lazos |
| 1967 | 3rd American Open | IM Dr. Anthony Saidy |
| 1966 | 2nd American Open | IM Lawrence (Larry) Kaufman |
| 1965 | 1st American Open | GM Pal Benko |
American Open 