<p>Heavy oil, which is a bottom product of crude oil having an API gravity of 10°–23°, is sticky and highly viscous in nature. When heavy oil is exposed to soil due to any accidental leakage or transportation, the physical and chemical nature of heavy oil makes it reside in the pores of soil for a prolonged time, which creates an environmental problem. It is challenging to recover this heavy oil from the contaminated soil, but once it is recovered, it can be a highly valuable resource. Among the available techniques, the ultrasound method is effective and environmentally friendly, which could recover oil with slight alteration in its properties. In this work, ultrasound is used to investigate the feasibility of reducing the consumption of surfactant/alkaline chemicals to recover heavy oil and to increase the recovery efficiency. The influence of ultrasound intensity, surfactant (sodium dodecyl sulfate), alkaline (sodium carbonate) concentration, and the combined impact of sodium dodecyl sulfate with sodium carbonate on the recovery of oil from soil has been investigated. Heavy oil recovery was found to be more effective at 2 wt% sodium dodecyl sulfate, 3 wt% sodium carbonate, and 100% ultrasound intensity. Compared with the individual influence of surfactant and alkaline, the combined effect of surfactant and alkaline provided higher recovery of 92% with an ultrasound power of 100% in 60&#xa0;min. The API gravity of the separated heavy oil has been increased from 16° to 26.42° due to ultrasonication. The chemical characterization of separated oil from contaminated soil has been studied with GC-MS and FT-IR analysis.</p>