<i>Carex pseudochinensis</i> H. Lév. & Vaniot is an endemic species in Korea and is included in the clade of section <i>Paludosae</i> in the recent classification system. We present the complete mitochondrial genome sequence of <i>C. pseudochinensis</i> based on the POLAP pipeline with both long- and short-read sequences. The mitochondrial genome is 997,628 bp in length, containing two large regions of 536.94 and 419.04 kbp, respectively, and a pair of direct repeat regions of about 20.25 kbp. The genome contains 57 genes, including 31 protein-coding genes, 20 tRNAs, and 6 rRNAs. Phylogenetic analysis based on mitochondrial proteomes, including those from ten species of related taxa, confirmed a close phylogenetic relationship between <i>C. breviculmis</i> and <i>C. pseudochinensis</i>.