NICD

NICD may refer to:
 * National Institute for Communicable Diseases, South Africa, part of the National Health Laboratory Service
 * Nickel–cadmium battery (NiCd), a rechargeable battery
 * South Shore Line (NICTD) (reporting mark NICD), an interurban commuter rail line in Chicago and northern Indiana
 * N-formylmaleamate deformylase, an enzyme