List of NBA longest losing streaks

This is a list of the longest regular season losing streaks in National Basketball Association (NBA) history. Streaks started at the end of one season are carried over into the following season. The Detroit Pistons and the Philadelphia 76ers are tied for the longest ever losing streak, losing 28 straight games. The Detroit Pistons have the longest losing streak in a single season, while the Philadelphia 76ers lost 28 consecutive games across two seasons:  and.

Key
For tiebreakers, precedence is given to single season streaks over multi-season streaks; otherwise ties are listed in chronological order with earliest occurrence listed first.

Playoffs
This list contains only streaks consisting entirely of postseason games.