The larvae of the mangrove sesarmid crab Neosarmatium indicum (A. Milne-Edwards, 1868), were reared in the laboratory. Five zoeal stages and one megalopa are described in detail and illustrated. Morphologically, the first zoea of N. indicum is similar to those of other species of Neosarmatium, as well as species of the family Sesarmidae, in that they share most of the following characters: no lateral carapace spines, five setae on the endopod of the maxilla, and four terminal setae on the distal segment of the mandibular palp in the megalopal stage. The differences between the first zoea and the megalopa of N. indicum and those of its related sesarmid species are discussed briefly.