Studies　have　reported　that　various　hydrocarbons　and　hydrocarbon-degrading　bacteria　are　found　in　global　deep-sea　hydrothermal　regions.　However,　little　is　known　about　degradation　characteristics　of　culturable　hydrocarbon-degrading　bacteria　from　these　regions.　We　speculate　that　these　bacteria　can　be　used　as　resources　for　the　bioremediation　of　oil　pollution.　In　this　study,　six　oil-degrading　consortia　were　obtained　from　the　hydrothermal　region　of　the　Southern　Mid-Atlantic　Ridge　through　room-temperature　enrichment　experiments.　The　dominant　oil-degrading　bacteria　belonged　to　Nitratireductor,　Pseudonocardia,　Brevundimonas　and　Acinetobacter.　More　varieties　of　hydrocarbon-degrading　bacteria　were　obtained　from　sediments　(preserved　at　4　°C)　near　hydrothermal　vents.　Most　strains　had　the　ability　to　degrade　high　molecular　weight　petroleum　components.　In　addition,　Pseudonocardia　was　shown　to　exhibit　a　high　degradation　ability　for　phytane　and　pristine　for　the　first　time.　This　study　may　provide　new　insights　into　the　community　structure　and　biodiversity　of　culturable　oil-degrading　bacteria　in　deep-sea　hydrothermal　regions.　©　2021　Elsevier　Ltd