Nica or NICA may refer to: Nīca, a village in Latvia Niça, the native Occitan name of Nice, a city in France "Nica", a jazz tune composed by Sonny Clark
Nica is an adjective which may refer to: Nica (name) Nicaragua Nicaraguan people Nica Airlines, an alternate name for Nicaragüense de Aviación, a Nicaraguan airline National Institute of Circus Arts, an Australian circus school National Intelligence Coordinating Agency, a government agency in the Philippines Netherlands Indies Civil Administration, the World War II-era Dutch colonial administration in Indonesia Nicotine Anonymous (NicA), a stop-smoking program Northern Ireland Court of Appeal, part of the Courts of Northern Ireland Nuclotron-based Ion Collider fAcility, a proton and heavy ion collider under construction at JINR in Dubna, Russia