Sida

Sida may refer to:


 * Sida (crustacean), a genus of cladoceran water fleas
 * Sida (plant), a genus of flowering plants
 * Security Identification Display Area, US FAA
 * Swedish International Development Cooperation Agency, a Swedish governmental agency
 * Acquired Immune Deficiency Syndrome (AIDS), a disease, abbreviated as SIDA in several languages
 * Sidaction, a French charity organization
 * Two journals published by the Botanical Research Institute of Texas
 * The fruit of the Coula edulis tree, also called the Gabon nut
 * Amphoe Sida, a district in Nakhon Ratchasima Province, Thailand