The productivity of essential oilseed crops, including soybean (Glycine max L.), sunflower (Helianthus annuus L.) and rapeseed, is increasingly threatened by the increasing rate of drought stress, aggravated by climate change. In this situation, biostimulants present a viable natural approach for improving crop resilience. This chapter highlights the regulatory roles of biostimulants at various growth stages and molecular levels, emphasizing their impact on seed germination, physiological responses and transcriptional alterations induced by drought stress. Biostimulants boost drought tolerance by stimulating primary and secondary metabolism, promoting vigorous root development for improved water and nutrient absorption, regulating stomatal function and activating stress-responsive signaling pathways. The effectiveness of biostimulants is dependent upon strategic aspects including application time, dose and mechanism of action. Moreover, the incorporation of biostimulants with traditional agricultural inputs and precision agriculture technologies can markedly enhance crop output. Novel formulations, comprising encapsulated biostimulant chemicals in conjunction with elicitors and developments in genetic changes or transgenes for drought tolerance, present new synergistic prospects for increasing plant resilience. This chapter emphasizes the potential of biostimulants as a crucial tool for sustainable agriculture in oilseed crops against problems posed by climate change, namely drought.