Styrax obassia Siebold & Zucc. is a distinct member of the family Styracaceae with fragrant and beautiful flowers. In this study, we determined the complete chloroplast (cp) genome sequence of S. obassia in an effort to provide genomic resources useful for promoting its conservation. The circular genome of S. obassia was 157,910 bp in size and contained two inverted repeat (IRa and IRb) regions of 26,051 bp, which were separated by a large single copy (LSC) region of 87,528 bp, and a small single copy (SSC) region of 18,280 bp. A total of 133 genes are encoded, including 88 protein-coding genes, 37 tRNA genes, and eight rRNA genes. The overall GC content of S. obassia genome is 36.97%. The phylogenetic analysis suggests that S. obassia is a sister species to Styrax suberifolius and Styrax zhejiangensis in Styracaceae.