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Two Gram-negative, rod-shaped, gliding and pink-pigmented bacterial strains, X14-1(T) and X19-1, were isolated from a mixture of sand samples collected from the desert of Xinjiang, China, and characterized by using a polyphasic taxonomic approach. Strains X14-1(T) and X19-1 contained MK-7 as the predominant menaquinone. The major cellular fatty acids included iSo-C(15:0), iSo-C(17:0) 3-OH, summed feature 3 and summed feature 4. The DNA G + C contents of strains X14-1(T) and X19-1 were 48.2 and 48.9 mol%, respectively. 16S rRNA gene sequence analysis showed that the isolates were highly related to each other (99.2%) and confirmed their placement in the genus Pontibacter. Strains X14-1(T) and X19-1 exhibited 1 6S rRNA gene similarity levels of 95.0-97.2% to the type strains of the two Pontibacter species with validly published names. DNA-DNA hybridization experiments revealed a high level of relatedness between the two new isolates (82%), but low levels of relatedness between strain X14-1(T) and the phylogenetically most closely related species Pontibacter actiniarum KMM 6156(T) (51%). On the basis of genotypic and phenotypic evidence, strains X14-1(T) and X19-1 are considered to represent a novel species of the genus Pontibacter, for which the name Pontibacter korlensis sp. nov. is proposed. The type strain is X14-1(T) (=CCTCC AB 206081(T) =NRRL B-51097(T)).