NECA

NECA or Neca may refer to:


 * National Entertainment Collectibles Association, an American merchandise licensee of film and television for the enthusiast market
 * National Electrical Contractors Association, an American trade association
 * NECA Show, electrical construction industry’s trade show since 1901
 * National Exchange Carrier Association, an American association of telephone common carriers
 * Neca (footballer) (born 1979), real name João Alexandre Duarte Ferreira Fernandes, Portuguese footballer
 * NECA Project, Net Environment for Embodied Emotional Conversational Agents
 * Nitrous Oxide Emission Control Area, sea areas with regulated nitrous oxides emission caps
 * North East Combined Authority, a local government body in North East England
 * 5′-(N-Ethylcarboxamido)adenosine (NECA), a reference agonist for adenosine G protein-coupled receptors; see Adenosine A2A receptor