Neodiplectanum is a genus of monopisthocotylean monogeneans, belonging to the family Diplectanidae. According to Mizelle & Blatz (1941), the genus Neodiplectanum "differs from Diplectanum <small>Diesing, 1858</small>, its closest relative, by the presence of two, instead of three, cuticular bars on the haptor". Oliver (1987) thought that the two genera were synonyms, but Neodiplectanum was resurrected later.
Species of Neodiplectanum are parasitic on the gills of fish of the family Gerreidae.
According to the World Register of Marine Species, species in this genus include: