Petroleum is a vital and strategic energy resource for boosting a country's GDP. Despite its high economic value, it is considered a primary factor in environmental deterioration. Bioremediation strategies employ indigenous microbial strains to propose an economical and sustainable alternative to conventional remediation practices. The current study investigates the isolation, identification, and characterization of five novel biosurfactant-producing and petroleum hydrocarbon-degrading bacterial species: Rhodococcus indonesiensis strain SARSHI1, Pseudomonas aeruginosa strain SARSHI2, Pseudomonas argentinensis strain SARSHI3, Acinetobacter baumannii strain SARSHI4, and Rhodococcus qingshengii strain SARSHI5. Molecular identification was determined via 16S rRNA sequencing, and their taxonomic identities were validated through biochemical assessments. Their partial sequences were deposited in NCBI with accession numbers: 'PV034287', 'OP597529', 'OP584476', 'OQ711779', and 'OQ711775' respectively. Amongst them, R. indonesiensis exhibited the highest biosurfactant and hydrocarbon-degrading potential with a critical micelle concentration of 70 mg/L, reduced surface tension of 27 mN/m, an emulsification index (E