Fish landing site surveys in eastern Indonesia, conducted between April 2001 and March 2006, recordedseven species of lamnoid sharks (order Lamniformes) belonging to four families. Of these, Alopiidae weremost abundant in the landings, with Alopias pelagicus contributing ~13% to the total biomass of all sharksrecorded. Single specimens of both Carcharias taurus and Odontaspis ferox represent the first confirmedrecords of these two odontaspid species from Indonesian waters. The length at first maturity (L50) offemales and males of Alopias pelagicus were 2853 and 2468 mm total length (TL), respectively, and size atbirth was 1300–1440 mm TL. Pregnant females of both A. pelagicus and A. superciliosus had litters of onlytwo embryos (one per uterus) that were confirmed to be oophagous, but not adelphophagous. Females andmales of Pseudocarcharias kamoharai matured at 870–1030 and ~725 mm TL, respectively, and size at birthwas 360–450 mm TL. Pregnant females contained four embryos (two per uterus) which were oophagous,but unlikely to be adelphophagous. Males of Isurus oxyrinchus and I. paucus matured at ~1860 and 2050–2281 mm TL, respectively. These are the first biological data reported on lamnoid sharks in Indonesianwaters.