Bill Russell Dynasty Era era 100 11 championships in 13 years for one franchise. The most concentrated championship dominance in sports history. 1960s Celtics Dynasty decade 98 Boston won 11 of 13 championships; most dominant dynasty run in any major sport 1990s Bulls Dynasty decade 88 Bulls won 6 of 8 championships (1991-98). Rockets won 2 during Jordan retirement. Extreme concentration. 4 Jordan Era 1990s era 85 Broader 1990s era still dominated by Bulls with 6 titles. Rockets 2. Pistons 1 at the start. Heavy concentration. 4 Pre-Three-Point Era style_period 85 Celtics and Lakers combined for majority of titles; extreme concentration in early NBA 6 1950s NBA decade 82 Minneapolis Lakers won 5 of first 6 BAA/NBA titles; extreme early dynasty concentration 7 Shaq Kobe Lakers Dynasty era 80 Lakers won 3 straight (2000-02). Spurs won 99 and 03. High concentration in two franchises. 8 Warriors Dynasty 2010s era 78 Warriors won 4, Cavs 1, Raptors 1, Bucks 1. Warriors dominated but some variety. Moderate concentration. 8 2010s Superteam Era decade 78 Warriors won 4, LeBron teams won 2; highly concentrated between few superteams 10 Hand-Checking Era style_period 75 Bulls (6), Lakers (5), Pistons (2) dominated; high concentration among few franchises 10 Larry Bird Magic Johnson Era era 75 Lakers 5, Celtics 3, Sixers 1, Pistons 2 in 1980s. Concentrated in two franchises but others won too. 12 1980s Showtime decade 70 Lakers and Celtics dominated but Sixers, Pistons also won. Moderate concentration with 4 champions in the decade. 13 Small Ball Era style_period 65 Multiple champions in the small ball era. Warriors dominated but Raptors, Bucks, Nuggets also won. Moderate concentration. 13 Bubble Era 2020 era 65 Single season window. Lakers won. Multiple strong contenders (Clippers, Bucks, Heat). Unusual competitive dynamics. 15 Bad Boys Pistons Era era 62 Pistons won 2 straight but Lakers, Celtics also won in the broader late 1980s. Pistons dominated a short window. 15 Load Management Era era 62 Different champions each year (Raptors, Lakers, Bucks, Warriors, Nuggets, Celtics). Excellent distribution. 17 2000s Post-Jordan Era decade 60 Spurs 3, Lakers 3, Heat 1, Pistons 1, Celtics 1. Relatively distributed across multiple franchises. 18 Expansion Era 1970s era 55 Multiple champions across the decade. Celtics, Knicks, Bucks, Lakers, Warriors, Blazers, Bullets, Sonics all won. 18 Player Empowerment Era era 55 Mixed results. Super teams formed but not all won. Some concentration but also upsets. 18 Heatles Era era 55 Heat won 2 of 4 titles. Spurs and Mavs also won. Moderate concentration. 21 Big Three Celtics Era era 52 Multiple different champions from 2008-2012 (Celtics, Lakers, Mavs, Heat). Relatively distributed. 21 1970s ABA Merger Era decade 52 Multiple different champions (Bucks, Lakers, Knicks, Celtics, Warriors, Blazers, Sonics, Bullets); good parity 21 Lob City Clippers Era era 52 Multiple different champions during 2011-2017 window. Heat, Spurs, Warriors, Cavs all won. 24 Grit and Grind Grizzlies Era era 48 Multiple different champions during Grizzlies window (2011-2017). No single team dominated. 24 Silver Era 2014-Present era 48 Warriors won 4, but also Cavs, Raptors, Lakers, Bucks, Nuggets, Celtics won. Some concentration but diverse. 24 Seven Seconds or Less Era era 48 Spurs, Heat, and Celtics won during Suns SSOL window. Suns never won despite innovation. 27 Stern Era 1984-2014 era 45 Lakers (10 Finals), Bulls (6 titles), Spurs (5) dominated. But many other champions too across 30 years. 27 Allen Iverson Culture Era era 45 Lakers 3-peat dominated. Spurs also won. Championships were concentrated among 2-3 franchises in this window. 29 Superteam Era era 42 Heat won 2, Warriors won 3-4 during this window. Some concentration but not absolute dominance. 29 Kareem Skyhook Era era 42 Spread across Bucks (1) and Lakers (5 with Kareem). Celtics also won multiple. Moderately concentrated. 29 2020s International Era decade 42 Lakers, Bucks, Warriors, Nuggets, Celtics all won; 5 different champions in 5 years is excellent parity 29 LeBron Era 2010s era 42 LeBron made 8 straight Finals but Warriors also dominated. Multiple champions (Heat, Cavs, Spurs, Warriors, Raptors). 33 Warriors Splash Bros Era era 38 Warriors won 4 titles in 8 years. Significant concentration of championships with one franchise. 34 Pre-Shot Clock Era era 28 Minneapolis Lakers dominated with Mikan. Limited competition in early BAA/NBA. Very concentrated. 35 George Mikan Era era 22 Minneapolis Lakers won 5 of 6 titles. Extreme championship concentration in early NBA history. 36 Integration Era 1950s era 18 Celtics began dynasty. Minneapolis Lakers before them. Extreme concentration of titles. 36 Wilt Chamberlain Scoring Era era 18 Celtics won 11 of 13 championships during Wilts career. Most concentrated championship era in NBA history.