The complete chloroplast genome sequence of <i>Zehneria japonica</i> (Thunb.) H. Y. Liu (Cucurbitaceae), a medicinal plant

<i>Zehneria japonica</i> (Thunb.) H. Y. Liu is a traditional Chinese medicinal plant. We sequenced and annotated its complete chloroplast genome, which is 157,052 bp in length with 36.99% GC content. It exhibits a typical quadripartite structure, including a large single-copy region of 86,849 bp, a small single-copy region of 17,867 bp, and two inverted repeat regions of 26,168 bp. The genome encodes 131 genes (86 protein-coding, 37 tRNA, and 8 rRNA). Phylogenetic analysis based on chloroplast genomes supports the monophyly of <i>Zehneria</i> species. These results enrich genomic resources and provide a foundation for future phylogenetic and evolutionary studies within <i>Zehneria</i>.