Slivenski Mineralni Bani (Bulgarian: Сливенски минерални бани) is a spa resort of national importance in central Bulgaria.

The administrative status is that of a settlement entity of local importance as per a 2006 decision of the Sliven Municipal Council.

[3] Slivenski Mineralni Bani is situated at an altitude of 245 m just south of the river Tundzha in the Sliven Valley between the Balkan Mountains and Sredna Gora.

Winter is moderately cold, summer is warm and autumn is long, sunny, dry and warmer than spring.

[4] It contains 27 mg of colloidal metasilicic acid per liter, but has a neutral reaction (pH 6.8) due to CO2 content (287 mg/L).