General Information: Polymorphum gilvum SL003B-26A1 is a type strain of a newly published novel species in the novel genus Polymorphum. It was isolated from a crude oil-polluted saline soil in Shengli Oilfield, China and could use the crude oil as the sole carbon source. Oil pollution has become a global issue because of its severe ecological impact and destruction. Bioremediation is proved to be an effective process to restore the oil polluted environments. The complete genome sequence of Polymorphum gilvum SL003B-26A1 provides new strategies for bioremediation of oil contaminated environment.