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
Sida, a village near Gali, Abkhazia, the site of the 1997 Sida shooting
