St is a common abbreviation for: · Saint · Stone , a unit of mass (spelt as St. in formal British English) · Street (spelt as St. in formal British English) · Such that in set theory, Mathematical proofs and many other areas · Simtropolis, a Sim City 4 fansite, is often abbreviated to ST. ST, St or st may also mean: · Atari ST, a computer · ST protocol (Internet Stream Protocol) · Germania , IATA airline designator · Saint Lucia, NATO country code · Sanitary towel · São Tomé and Príncipe, ISO country code * .st is the Internet country code top-level domain (ccTLD) for São Tomé and Príncipe · Scheduled tribes, the disadvantaged tribes of India commonly known as Adivasi · Secret T