This is a selected list of the longest-running musical theatre productions in history divided into two sections. The first section lists all Broadway and West End productions of musicals that have exceeded 2,500 performances, in order of greatest number of performances in either market. The second section lists, in alphabetical order, musicals that have broken historical long run records for musical theatre on Broadway, in the West End or Off-Broadway, since 1866, in alphabetical order.
- Legend:
- m = music, l = lyrics, b = book
- (Noteworthy trivia appear in parentheses)
- (5,678) = number of performances (in original Broadway production if not specified)
- > denotes shows that are still in production. The number of Broadway performances is updated per Playbill.com as of November 2023. The number of West End performances is updated per officiallondontheatre.com as of October 2023, and sporadically as information becomes available.
- "Tony Award winner" denotes winner of Tony for Best Musical
- "Olivier Award winner" denotes winner of award for Best New Musical