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Searching for the ways to process waste has become very topical today. Biotechnology is one of the most environmentally attractive methods, which has the ability to solve the problem of waste utilization and to produce the valuable microbial products, for example biosurfactants. We concluded that fried sunflower oil, oil-containing wastes (soapstock) and glycerol can be used for biosurfactant production by Rhodococcus erythropolis IMV Ac-5017, Acinetobacter calcoaceticus IMV B-7241 and Nocardia vaccinii K-8. Glucose addition (0.1%) into the medium with fried oil (2vol.%) led to a 4-fold increase of final surfactant concentration (6.8g/L). The simultaneous addition of fumarate and citrate (0.01–0.2%) into the IMV B-7241 and K-8 strains’ cultivating medium was accompanied by an increase of the exocellular biosurfactant quantity by 2–2.5-fold compared to the cultivation without organic acids. An increase in …