Runabouts ("Danube-class" vessels) are a fictional class of small, multi-purpose starships appearing in the Star Trek science-fiction franchise, primarily the television series Star Trek: Deep Space Nine, which aired on syndicated television between 1993 and 1999. They served as a means of transport for the crew of the fictional space station Deep Space Nine, in the early seasons of the series enabling storylines taking place away from the station.

This spacecraft design was created primarily by Herman Zimmerman, Rick Sternbach and Jim Martin in the 1990s for Star Trek: Deep Space Nine, and later used throughout the franchise such as in books, comics, and games.