| 2025 | 66 | 66th IEEE Annual Symposium on Foundations of Computer Science, FOCS 2025, Sydney, Australia, December 14-17, 2025 | Sydney | |
| 2024 | 65 | 65th IEEE Annual Symposium on Foundations of Computer Science, FOCS 2024, Chicago, IL, USA, October 27-30, 2024 | Chicago | |
| 2023 | 64 | 64th IEEE Symposium on Foundations of Computer Science FOCS 2023 | Santa Cruz | 2023-11-06/09 |
| 2022 | 63 | 63rd IEEE Symposium on Foundations of Computer Science FOCS 2022 | Denver | 2022-10-31 to 2022-11-03 |
| 2022 | 62 | 62nd IEEE Symposium on Foundations of Computer Science FOCS 2021 | | 2022-02-07/10 |
| 2021 | 62 | 62nd IEEE Annual Symposium on Foundations of Computer Science, FOCS 2021, Denver, CO, USA, February 7-10, 2022 | Denver | |
| 2020 | 61 | 61st Annual IEEE Symposium on Foundations of Computer Science FOCS 2020 | Durham | 2020-11-16/19 |
| 2019 | 60 | 60th Annual IEEE Symposium on Foundations of Computer Science FOCS 2019, FOCS | Baltimore | 2019-11-09/12 |
| 2018 | 59 | 59th Annual IEEE Symposium on Foundations of Computer Science FOCS 2018, FOCS | Paris | 2018-10-07/09 |
| 2017 | 58 | 58th Annual IEEE Symposium on Foundations of Computer Science FOCS 2017, FOCS | Berkeley | 2017-10-15/17 |
| 2016 | 57 | 57th IEEE Symposium on Foundations of Computer Science FOCS 2016, FOCS | New Brunswick | 2016-10-09/11 |
| 2015 | 56 | 56th IEEE Symposium on Foundations of Computer Science FOCS 2015, FOCS | Berkeley | 2015-10-18/20 |
| 2014 | 55 | 55th IEEE Symposium on Foundations of Computer Science FOCS 2014, FOCS | Philadelphia | 2014-10-18/21 |
| 2013 | 54 | 54th IEEE Symposium on Foundations of Computer Science FOCS 2013, FOCS | Berkeley | 2013-10-27/29 |
| 2012 | 53 | 53rd IEEE Symposium on Foundations of Computer Science FOCS 2012, FOCS | New Brunswick | 2012-10-20/23 |
| 2011 | 52 | 52nd Annual IEEE Symposium on Foundations of Computer Science FOCS 2011, FOCS | Palm Springs | 2011-10-22/25 |
| 2010 | 51 | 51st Annual Symposium on Foundations of Computer Science FOCS 2010, FOCS | Las Vegas | 2010-10-23/26 |
| 2009 | 50 | 50th Annual IEEE Symposium on Foundations of Computer Science FOCS 2009, FOCS | Atlanta | 2009-10-24/27 |
| 2008 | 49 | 49th Annual IEEE Symposium on Foundations of Computer Science FOCS 2008, FOCS | Philadelphia | 2008-10-25/28 |
| 2007 | 48 | 48th Annual IEEE Symposium on Foundations of Computer Science FOCS 2007, FOCS | Providence | 2007-10-20/23 |
| 2006 | 47 | 47th Annual IEEE Symposium on Foundations of Computer Science FOCS 2006, FOCS | Berkeley | 2006-10-22/24 |
| 2005 | 46 | 46th Annual IEEE Symposium on Foundations of Computer Science FOCS 2005, FOCS | Pittsburgh | 2005-10-22/25 |
| 2004 | 45 | 45th Annual IEEE Symposium on Foundations of Computer Science FOCS 2004, FOCS | Rome | 2004-10-17/19 |
| 2003 | 44 | 44th Annual IEEE Symposium on Foundations of Computer Science FOCS 2003, FOCS | Cambridge | 2003-10-11/14 |
| 2002 | 43 | 43rd Annual IEEE Symposium on Foundations of Computer Science FOCS 2002, FOCS | Vancouver | 2002-11-16/19 |
| 2001 | 42 | 42nd Annual Symposium on Foundations of Computer Science FOCS 2001, FOCS | Las Vegas | 2001-10-14/17 |
| 2000 | 41 | 41st Annual Symposium on Foundations of Computer Science FOCS 2000, FOCS | Redondo Beach | 2000-11-12/14 |
| 1999 | 40 | 40th Annual Symposium on Foundations of Computer Science FOCS 1999, FOCS | New York City | 1999-10-17/19 |
| 1998 | 39 | 39th Annual Symposium on Foundations of Computer Science FOCS 1998, FOCS | Palo Alto | 1998-11-08/11 |
| 1997 | 38 | 38th Annual Symposium on Foundations of Computer Science FOCS 1997, FOCS | Miami Beach | 1997-10-19/22 |
| 1996 | 37 | 37th Annual Symposium on Foundations of Computer Science FOCS 1996, FOCS | Burlington | 1996-10-14/16 |
| 1995 | 36 | 36th Annual Symposium on Foundations of Computer Science FOCS 1995, FOCS | Milwaukee | 1995-10-23/25 |
| 1994 | 35 | 35th Annual Symposium on Foundations of Computer Science FOCS 1994, FOCS | Santa Fe | 1994-11-20/22 |
| 1993 | 34 | 34th Annual Symposium on Foundations of Computer Science FOCS 1993, FOCS | Palo Alto | 1993-11-03/05 |
| 1992 | 33 | 33rd Annual Symposium on Foundations of Computer Science FOCS 1992, FOCS | Pittsburgh | 1992-10-24/27 |
| 1991 | 32 | 32nd Annual Symposium on Foundations of Computer Science FOCS 1991, FOCS | San Juan | 1991-10-01/04 |
| 1990 | 31 | 31st Annual Symposium on Foundations of Computer Science FOCS 1990, FOCS | St. Louis | 1990-10-22/24 |
| 1989 | 30 | 30th Annual Symposium on Foundations of Computer Science FOCS 1989, FOCS | Durham | 1989-10-30 to 1989-11-01 |
| 1988 | 29 | 29th Annual Symposium on Foundations of Computer Science, White Plains, New York, USA, 24-26 October 1988 FOCS | White Plains | 1988-10-24/26 |
| 1987 | 28 | 28th Annual Symposium on Foundations of Computer Science, Los Angeles, California, USA, 27-29 October 1987 FOCS | Los Angeles | 1987-10-27/29 |
| 1986 | 27 | 27th Annual Symposium on Foundations of Computer Science, Toronto, Canada, 27-29 October 1986 FOCS | Toronto | 1986-10-27/29 |
| 1985 | 26 | 26th Annual Symposium on Foundations of Computer Science, Portland, Oregon, USA, 21-23 October 1985 FOCS | Portland | 1985-10-21/23 |
| 1984 | 25 | 25th Annual Symposium on Foundations of Computer Science, West Palm Beach, Florida, USA, 24-26 October 1984 FOCS | West Palm Beach | 1984-10-24/26 |
| 1983 | 24 | 24th Annual Symposium on Foundations of Computer Science, Tucson, Arizona, USA, 7-9 November 1983 FOCS | Tucson | 1983-11-07/09 |
| 1982 | 23 | 23rd Annual Symposium on Foundations of Computer Science, Chicago, Illinois, USA, 3-5 November 1982 FOCS | Chicago | 1982-11-03/05 |
| 1981 | 22 | 22nd Annual Symposium on Foundations of Computer Science, Nashville, Tennessee, USA, 28-30 October 1981 FOCS | Nashville | 1981-10-28/30 |
| 1980 | 21 | 21st Annual Symposium on Foundations of Computer Science, Syracuse, New York, USA, 13-15 October 1980 FOCS | Syracuse | 1980-10-13/15 |
| 1979 | 20 | 20th Annual Symposium on Foundations of Computer Science, San Juan, Puerto Rico, 29-31 October 1979 FOCS | Puerto Rico | 1979-10-29/31 |
| 1978 | 19 | 19th Annual Symposium on Foundations of Computer Science, Ann Arbor, Michigan, USA, 16-18 October 1978 FOCS | Ann Arbor | 1978-10-16/18 |
| 1977 | 18 | 18th Annual Symposium on Foundations of Computer Science, Providence, Rhode Island, USA, 31 October - 1 November 1977 FOCS | Providence | 1977-11-01 |
| 1976 | 17 | 17th Annual Symposium on Foundations of Computer Science, Houston, Texas, USA, 25-27 October 1976 FOCS | Houston | 1976-10-25/27 |
| 1975 | 16 | 16th Annual Symposium on Foundations of Computer Science, Berkeley, California, USA, October 13-15, 1975 FOCS | Berkeley | 1975-10-13/15 |
| 1974 | 15 | 15th Annual Symposium on Switching and Automata Theory, New Orleans, Louisiana, USA, October 14-16, 1974 FOCS | New Orleans | 1974-10-14/16 |
| 1973 | 14 | 14th Annual Symposium on Switching and Automata Theory, Iowa City, Iowa, USA, October 15-17, 1973 FOCS | Iowa City | 1973-10-15/17 |
| 1972 | 13 | 13th Annual Symposium on Switching and Automata Theory, College Park, Maryland, USA, October 25-27, 1972 FOCS | College Park | 1972-10-25/27 |
| 1971 | 12 | 12th Annual Symposium on Switching and Automata Theory, East Lansing, Michigan, USA, October 13-15, 1971 FOCS | East Lansing | 1971-10-13/15 |
| 1970 | 11 | 11th Annual Symposium on Switching and Automata Theory, Santa Monica, California, USA, October 28-30, 1970 FOCS | Santa Monica | 1970-10-28/30 |
| 1969 | 10 | 10th Annual Symposium on Switching and Automata Theory, Waterloo, Ontario, Canada, October 15-17, 1969 FOCS | Waterloo | 1969-10-15/17 |
| 1968 | 9 | 9th Annual Symposium on Switching and Automata Theory, Schenectady, New York, USA, October 15-18, 1968 FOCS | Schenectady | 1968-10-15/18 |
| 1967 | 8 | 8th Annual Symposium on Switching and Automata Theory, Austin, Texas, USA, October 18-20, 1967 FOCS | Austin | 1967-10-18/20 |
| 1966 | 7 | 7th Annual Symposium on Switching and Automata Theory, Berkeley, California, USA, October 23-25, 1966 FOCS | Berkeley | 1966-10-23/25 |
| 1965 | 6 | 6th Annual Symposium on Switching Circuit Theory and Logical Design, Ann Arbor, Michigan, USA, October 6-8, 1965 FOCS | Ann Arbor | 1965-10-06/08 |
| 1964 | 5 | 5th Annual Symposium on Switching Circuit Theory and Logical Design, Princeton, New Jersey, USA, November 11-13, 1964 FOCS | Princeton University | 1964-11-11/13 |
| 1963 | 4 | 4th Annual Symposium on Switching Circuit Theory and Logical Design, Chicago, Illinois, USA, October 28-30, 1963 FOCS | Chicago | 1963-10-28/30 |
| 1962 | 3 | 3rd Annual Symposium on Switching Circuit Theory and Logical Design, Chicago, Illinois, USA, October 7-12, 1962 FOCS | Chicago | 1962-10-07/12 |
| 1961 | 2 | 2nd Annual Symposium on Switching Circuit Theory and Logical Design, Detroit, Michigan, USA, October 17-20, 1961 FOCS | Detroit | 1961-10-17/20 |
| 1960 | 1 | 1st Annual Symposium on Switching Circuit Theory and Logical Design, Chicago, Illinois, USA, October 9-14, 1960 FOCS | Chicago | 1960-10-09/14 |