State Bank of Sikkim (SBS) is a state owned banking institution headquartered at Gangtok, Sikkim, India.

In addition to banking services, State Bank of Sikkim handles treasury functions of the Sikkim State Government.

[3] However, the report of the Comptroller and Auditor General of India for the year ended March 2012[4] recorded that the performance of State Bank of Sikkim generated 86 percent of the total profit earned by the state owned PSUs during the year.

The Bank completed 50 years in 2018, during which it worked in partnership with development projects in the state.

It was initially headquartered at MG Marg, Gangtok and later moved to the present location,[5] holding its headquarters and main branch.