SAIB or Saib or Saïb may refer to:
Sucrose acetate isobutyrate, an emulsifier, used as an additive in food and cosmetics Swedish Accident Investigation Board, now the Swedish Accident Investigation Authority Swiss Accident Investigation Board, now the Swiss Transportation Safety Investigation Board
People Saib is an Arabic male given name Saib Tabrizi (1601/2–1677), Persian poet Saib Shawkat, Arab nationalist in the 20th century Moussa Saïb (born 1969), Algerian football manager and former player