A non-motile and rod shaped bacterium, designated strain B1$^T$, was isolated from forest soil at Mt. Baekwoon, Republic of Korea. Cells were Gram-negative, catalase-positive, and oxidase-negative. The major fatty acids were 9-octadecenoic acid (C$_{18:1}$ $omega$9c; 42 %) and hexadecanoic acid (C$_{16:0}$; 25.9 %) and summed feature 3 (comprising iso-C$_{15:0}$ 2-OH and/or C$_{16:1}$ $omega$7c; 10.0%). The DNA G+C content was 44.1 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain B1$^T$ formed a lineage within the genus Acinetobacter and was closely related to A. baylyi DSM 14961$^T$ (98.6% sequence similarity), followed by A. baumannii DSM 30007$^T$ (97.4 %), A. calcoaceticus DSM 30006$^T$ (97.0 %), and 3 genomic species (96.8$sim$7.6%). Phenotypic characteristics, gyrB gene sequence analysis and DNA-DNA relatedness data distinguished strain B1$^T$ from type strains of A. baylyi, A. baumannii, and A. calcoaceticus. On the basis of the evidence presented in this study, strain B1$^T$ represents a novel species of the genus Acinetobacter, for which the name Acinetobacter soli sp. novo is proposed. The type strain is B1$^T$ (= KCTC 22184$^T$= JCM 15062$^T$).