A perfect season is a sports season including any requisite playoff portion, in which a team remains undefeated and untied. The feat is extremely rare at the professional level of any team sport, and has occurred more commonly at the collegiate level in the United States. A perfect regular season (known by other names outside the United States) is a season excluding any playoffs, where a team remains undefeated and untied; it is less rare than a complete perfect season but still exceptional. Here are a list of teams that either won every game including the playoffs and championship -- as well as those that just won every regular season game:

  1. 1972 Miami Dolphins (NFL) including championship
  2. 1920 Akron Pros (Pro football) regular season only
  3. 1922 Canton Bulldogs (Pro football) regular season only
  4. 1923 Canton Bulldogs (Pro football) regular season only
  5. 1929 Green Bay Packers (Pro football) regular season only
  6. 1934 Chicago Bears (NFL) regular season only
  7. 1942 Chicago Bears (NFL) regular season only
  8. 2007 New England Patriots (NFL) regular season only
  9. 1956 San Francisco Dons (NCAA men's basketball) including championship
  10. 1957 North Carolina Tar Heels (NCAA men's basketball) including championship
  11. 1964 UCLA Bruins (NCAA men's basketball) including championship
  12. 1967 UCLA Bruins (NCAA men's basketball) including championship
  13. 1972 UCLA Bruins (NCAA men's basketball) including championship
  14. 1973 UCLA Bruins (NCAA men's basketball) including championship
  15. 1976 Indiana Hoosiers (NCAA men's basketball) including championship
  16. 1939 LIU Blackbirds (NCAA men's basketball) including championship
  17. 1939 Loyola Ramblers (NCAA men's basketball) regular season only
  18. 1941 Seton Hall Pirates (NCAA men's basketball) regular season only
  19. 951 Columbia Lions (NCAA men's basketball) regular season only
  20. 1961 Ohio State Buckeyes (NCAA men's basketball) regular season only
  21. 1968 Houston Cougars (NCAA men's basketball) regular season only
  22. 1968 St. Bonaventure Bonnies (NCAA men's basketball) regular season only
  23. 1971 Marquette Warriors (NCAA men's basketball) regular season only
  24. 1975 Indiana Hoosiers (NCAA men's basketball) regular season only
  25. 1976 Rutgers Scarlet Knights (NCAA men's basketball) regular season only
  26. 1979 Indiana State Sycamores (NCAA men's basketball) regular season only
  27. 1979 Alcorn State Braves (NCAA men's basketball) regular season only
  28. 1991 UNLV Runnin' Rebels (NCAA men's basketball) regular season only
  29. 2004 Saint Joseph's Hawks (NCAA men's basketball) regular season only
  30. 2014 Wichita State Shockers (NCAA men's basketball) regular season only *
  31. 1940 Seton Hall Pirates (NCAA men's basketball) regular season only
  32. 1944 Army Cadets (NCAA men's basketball) regular season only
  33. 1954 Kentucky Wildcats (NCAA men's basketball) regular season only
  34. 1973 NC State Wolfpack (NCAA men's basketball) regular season only
  35. 1973 Immaculata Mighty Macs (NCAA women's basketball) including championship
  36. 975 Delta State Lady Statesmen (NCAA women's basketball) including championship
  37. 1981 Louisiana Tech Lady Techsters (NCAA women's basketball) including championship
  38. 1986 Texas Longhorns (NCAA women's basketball) including championship
  39. 1995 Connecticut Huskies (NCAA women's basketball) including championship
  40. 1998 Tennessee Lady Vols (NCAA women's basketball) including championship
  41. 2002 Connecticut Huskies (NCAA women's basketball) including championship
  42. 2009 Connecticut Huskies (NCAA women's basketball) including championship
  43. 2010 Connecticut Huskies (NCAA women's basketball) including championship
  44. 2012 Baylor Lady Bears (NCAA women's basketball) including championship
  45. 1983 Oral Roberts Lady Titans (NCAA women's basketball) regular season only
  46. 1990 Louisiana Tech Lady Techsters (NCAA women's basketball) regular season only
  47. 1992 Vermont Catamounts (NCAA women's basketball) regular season only
  48. 1997 Connecticut Huskies (NCAA women's basketball) regular season only
  49. 1998 Liberty Lady Flames (NCAA women's basketball) regular season only
  50. 2003 Connecticut Huskies (NCAA women's basketball) regular season only
  51. 2007 Duke Blue Devils (NCAA women's basketball) regular season only
  52. 2010 Nebraska Cornhuskers (NCAA women's basketball) regular season only
  53. 2012-13 Minnesota Golden Gophers (NCAA women's ice hockey) including championship
  54. 1983–84 Bemidji State Beavers (NCAA men's ice hockey) including championship
  55. 1969–70 Cornell Big Red (NCAA men's ice hockey) including championship
  56. 2002 The Ohio State Buckeyes (NCAA football) including championship
  57. 2009 Boise State Broncos (NCAA football) including championship
  58. 2009 Alabama Tide (NCAA football) including championship
  59. 2010 Auburn Tigers (NCAA football) including championship
  60. 2013 Florida State Seminoles (NCAA football) including championship
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