Has a 3-0 lead ever gone to Game 7 NBA?

No, there has never been a 3-0 lead in an NBA playoff series that has gone to Game 7. In NBA history, whenever a team takes a 3-0 lead in a best-of-seven series, they have always gone on to win the series in the fourth game. For example, in the 2017 NBA Finals, the Golden State Warriors were up 3-0 against the Cleveland Cavaliers, and they clinched the championship by winning the fourth game. This trend has been consistent throughout the NBA history, making it highly unlikely for a team to come back from a 3-0 deficit and force a Game 7.