S (disambiguation)

S is the nineteenth letter of the English alphabet. S may also refer to:

• S postcode area, a postcode area including Sheffield, England
• S (programming language), a programming language
• S band, a band of radio which ranges from 2 to 4 GHz
• S phase, part of the cell cycle
• S-block of the periodic table, which includes alkali metals, alkaline earth metals, and hydrogen and helium
• long s, a mathematical term for the integral sign
• S combinator in combinatory logic
• S, the periodic table symbol for Sulfur
• "S", the nickname for Solomon Shereshevskii

S may also refer to:

• S on a map, meaning South, one of the 4 cardinal directions
• <s> is the deprecated HTML start tag for strike-through text, like this

See also

• S class