## Overview The National Basketball Association (NBA) is the premier professional basketball league in the world, featuring 30 teams—29 based in the United States and one in Canada[1]. Headquartered in Midtown Manhattan, the NBA is recognized as one of the major professional sports leagues in North America and is the second-wealthiest by revenue, trailing only the National Football League (NFL)[1]. NBA players are among the highest-paid athletes globally, reflecting the league’s commercial success and global appeal[1]. ## History The NBA was established in 1949 through the merger of the Basketball Association of America (BAA) and the National Basketball League (NBL), though it traces its official founding to the BAA’s 1946 inception[1]. A pivotal moment came in 1976 with the NBA-ABA merger, which expanded the league by four franchises and helped solidify its dominance in American basketball[1]. The league’s regular season traditionally runs from October to April, with each team playing 82 games, followed by a playoff tournament culminating in the NBA Finals in June[1]. ## Key Achievements The Boston Celtics hold the record for the most NBA championships, with 18 titles, most recently in 2024[1][3]. The Oklahoma City Thunder are the reigning champions, having won the 2025 NBA Finals—their first title since relocating from Seattle[1][3]. The NBA has also produced iconic individual achievements: LeBron James is the all-time leading scorer, and Russell Westbrook holds the record for most triple-doubles[3]. The league’s global reach is reflected in its massive fan base, social media presence, and international player recruitment. ## Current Status and Innovations The 2025–26 season marks the NBA’s 80th anniversary and introduces new broadcast partnerships with ESPN, NBC, and Amazon Prime Video, signaling a major shift in sports media distribution[2]. The league continues to