San

San or SAN (acronym) may refer to:

In mathematics:
 Stochastic Activity Network, stochastic extension to Petri nets
 Standard algebraic notation, the most common algebraic chess notation

In technology:
 Storage area network, a network designed to attach computer storage devices
 Styrene-acrylonitrile resin, a plastic

In biology:
 Sinoatrial node, pacemaking tissue in the right atrium of the heart
 Stochastic Activity Network, stochastic extension to Petri nets

In history:
 The Battle Creek Sanitarium was nicknamed The San by its guests.

In fiction:
 San (comics) is the name of a character of the Marvel Universe.
 Princess Mononoke, San is the original name of Princess Mononoke.

In geography:
 San, Mali, a town
 San River, a river in south-eastern Poland and western Ukraine, the Celt's word (san) means exactly river too.
 Sydney Adventist Hospital, due to the original name being the Sydney Sanitarium, which was shortened to the word "san".

In organizations and groups:
 Khoisan, in Southern Africa, also known as the San people, or Khwe Khoe, or Basarwa.
 South African Navy

In transportation:
 San Motors, an Indian automobile manufacturer.
 San Diego International Airport, IATA airport code
 Sandersville Railroad, The AAR reporting mark

In Music:
 San (参) is High and Mighty Color's 3rd Album

In other languages:
 the Italian and Spanish word for Saint
 San (letter), Greek letter between Pi and Qoppa
 -san, a Japanese title used after a person's name, the equivalent of Mr., Mrs. or Miss. Postfix of polite expressions like "Suzuki-san", "Ichirou-san",  or "Suzuki Ichirou-san" to name a personal family name or last name, verbally and literally, generally regardless of position, sex, age, and other factors.

 Pronunciation of 3 in Japanese and Mandarin Chinese
 Dream, in some Slavic languages
 Mountain, in Korean and Japanese.

Other uses:
 Senior Advocate of Nigeria
 Standard Address Number, a number used in the book trade to identify a supplier.