A moderately halophilic bacterial strain $15-13^T$, which was isolated from soda meadow saline soil in Daqing City, Heilongjiang Province, China, was subjected to a polyphasic taxonomic study. The cells of strain $15-13^T$ were found to be Gram-negative, rod-shaped, and motile. The required growth conditions for strain $15-13^T$ were: 1-23% NaCl (optimum, 7%), 10-$50^{circ}C$ (optimum, $35^{circ}C$), and pH 7.0-11.0 (optimum, pH 9.5). The predominant cellular fatty acids were $C_{18:1}$ ${omega}7c$ (60.48%) and $C_{16:0}$ (13.96%). The DNA G+C content was 67.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequence comparisons indicated that strain $15-13^T$ clustered within a branch comprising species of the genus Halomonas. The closest phylogenetic neighbor of strain $15-13^T$ was Halomonas pantelleriensis DSM $9661^T$ (98.9% 16S rRNA gene sequence similarity). The level of DNA-DNA relatedness between the novel isolated strain and H. pantelleriensis DSM $9661^T$ was 33.8%. On the basis of the phenotypic and phylogenetic data, strain $15-13^T$ represents a novel species of the genus Halomonas, for which the name Halomonas alkalitolerans sp. nov. is proposed. The type strain for this novel species is $15-13^T$ (=CGMCC $1.9129^T$ =NBRC $106539^T$).