We present the complete closed circular genome sequence derived from Oxford Nanopore sequencing of the shipworm endosymbiont Teredinibacter turnerae T7902 (DSM 15152, ATCC 39867), originally isolated from the shipworm Lyrodus pedicellatus (1). This sequence will aid in the comparative genomics of shipworm endosymbionts and the understanding of host-symbiont evolution.