Yass

Yass may refer to:

People

 * Catherine Yass (born 1963), painter
 * Jeff Yass (born 1956), options trader, managing director and one of the five founders of the Philadelphia-based Susquehanna International

Places

 * Yass, New South Wales, a town in Australia
 * Municipality of Yass, original local government for the town until 1980
 * Yass Valley Council, a local government area (shire) in New South Wales since 2004
 * Yass Valley Way, the main road through Yass that was part of the Hume Highway before a bypass was constructed in the 1990s
 * Yass River, a river in the state of New South Wales, Australia

Other uses

 * Yass (software), a genomic local alignment tool
 * Yass (music), a style of Polish jazz music from the 1980s and 1990s
 * Yas (slang), a form of the word "yes" in LGBT slang