Here is a list of teams who have won the NBA Championship organized by decade. This list goes back to 1976 when the NBA merged with the ABA.
2020s NBA Champions
2022 NBA Championship – Golden State Warriors 4, Boston Celtics 2
2021 NBA Championship – Milwaukee Bucks 4, Phoenix Suns 2
2020 NBA Championship – Los Angeles Lakers 4, Miami Heat 2
2010s NBA Champions
2019 NBA Championship – Toronto Raptors 4, Golden State Warriors 2
2018 NBA Championship – Golden State Warriors 4, Cleveland Cavaliers 0
2017 NBA Championship – Golden State Warriors 4, Cleveland Cavaliers 1
2016 NBA Championship – Cleveland Cavaliers 4, Golden State Warriors 3
2015 NBA Championship – Golden State Warriors 4, Cleveland Cavaliers 2
2014 NBA Championship – San Antonio Spurs 4, Miami Heat 1
2013 NBA Championship – Miami Heat 4, San Antonio Spurs 3
2012 NBA Championship – Miami Heat 4, Oklahoma City Thunder 1
2011 NBA Championship – Dallas Mavericks 4, Miami Heat 2
2010 NBA Championship – Los Angeles Lakers 4, Boston Celtics 3
2000s NBA Champions
2009 NBA Championship – Los Angeles Lakers 4, Orlando Magic 1
2008 NBA Championship – Boston Celtics 4, Los Angeles Lakers 2
2007 NBA Championship – San Antonio Spurs 4, Cleveland Cavaliers 0
2006 NBA Championship – Miami Heat 4, Dallas Mavericks 2
2005 NBA Championship – San Antonio Spurs 4, Detroit Pistons 2
2004 NBA Championship – Detroit Pistons 4, Los Angeles Lakers 1
2003 NBA Championship – San Antonio Spurs 4, New Jersey Nets 2
2002 NBA Championship – Los Angeles Lakers 4, New Jersey Nets 0
2001 NBA Championship – Los Angeles Lakers 4, Philadelphia 76ers 1
2000 NBA Championship – Los Angeles Lakers 4, Indiana Pacers 2
1990s NBA Champions
1999 NBA Championship – San Antonio Spurs 4, New York Knicks 1
1998 NBA Championship – Chicago Bulls 4, Utah Jazz 2
1997 NBA Championship – Chicago Bulls 4, Utah Jazz 2
1996 NBA Championship – Chicago Bulls 4, Seattle SuperSonics 2
1995 NBA Championship – Houston Rockets 4, Orlando Magic 0
1994 NBA Championship – Houston Rockets 4, New York Knicks 3
1993 NBA Championship – Chicago Bulls 4, Phoenix Suns 2
1992 NBA Championship – Chicago Bulls 4, Portland Trail Blazers 2
1991 NBA Championship – Chicago Bulls 4, Los Angeles Lakers 1
1990 NBA Championship – Detroit Pistons 4, Portland Trail Blazers 1
1980s NBA Champions
1989 NBA Championship – Detroit Pistons 4, Los Angeles Lakers 0
1988 NBA Championship – Los Angeles Lakers 4, Detroit Pistons 3
1987 NBA Championship – Los Angeles Lakers 4, Boston Celtics 2
1986 NBA Championship – Boston Celtics 4, Houston Rockets 2
1985 NBA Championship – Los Angeles Lakers 4, Boston Celtics 2
1984 NBA Championship – Boston Celtics 4, Los Angeles Lakers 3
1983 NBA Championship – Philadelphia 76ers 4, Los Angeles Lakers 0
1982 NBA Championship – Los Angeles Lakers 4, Philadelphia 76ers 2
1981 NBA Championship – Boston Celtics 4, Houston Rockets 2
1980 NBA Championship – Los Angeles Lakers 4, Philadelphia 76ers 2
1970s NBA Champions
1979 NBA Championship – Seattle SuperSonics 4, Washington Bullets 1
1978 NBA Championship –Washington Bullets 4, Seattle SuperSonics 3
1977 NBA Championship – Portland Trail Blazers 4, Philadelphia 76ers 2
1976 NBA Championship – Boston Celtics 4, Phoenix Suns 2