Siab

Siab or SIAB may refer to:


 * Ship in a bottle, a type of impossible bottle
 * Siab-e Darvish (also Sīāb), a village in Gachi Rural District, Malekshahi County, Ilam Province, Iran
 * Sirab (also Siab), a village and municipality in the Babek Rayon of Nakhchivan, Azerbaijan
 * SIAB: Shell in a Box, Web-based SSH
 * SIAB, a Romanian acronym for the Bucharest International Auto Show
 * SIAB, an abbreviation for the sodium-ion aqueous battery
 * SIAB (company), a former Swedish construction company Svenska Industribyggen AB
 * Schools International Athletic Board, a British organization hosting sport of athletics meetings for young athletes