SBS Transit Limited (simplified Chinese: 新捷运; traditional Chinese: 新捷運; pinyin: Xīnjiéyùn, SGX: S61) is a public transport operator in Singapore. Its major competitor in Singapore's duopoly transport system is SMRT Corporation, which also operates bus, rail, taxi and other transport services.

The company (organisation) was formed as a separately listed subsidiary in November 1997 under the name of Singapore Bus Services Limited, although it can trace its history back to the formation of Singapore Bus Service in 1973 with the merger of three bus companies. On 1 November 2001, the company's name was changed to SBS Transit Limited to reflect its status as a bus and rail operator.

Its parent company is ComfortDelGro Corporation, which was formerly known as DelGro Corporation Limited. The parent company has Singapore Bus Service as its direct predecessor.

In 2003, SBS Transit started operating the North East MRT Line of the Mass Rapid Transit system in addition to its existing bus operations. On 29 August 2011, SBS Transit was given the operation license for the Downtown MRT Line, which would start in 2013.