Light and phytohormone abscisic acid (ABA) regulate overlapping processes in plants, such as seed germination and seedling development.However, the molecular mechanism underlying the interaction between light and ABA signaling is largely unknown.Here, we show that FAR-RED ELONGATED HYPOCOTYL3 (FHY3) and FAR-RED IMPAIRED RESPONSE1 (FAR1), two key positive transcription factors in the phytochrome A pathway, directly bind to the promoter of ABI5 and activate its expression.Disruption of FHY3 and/or FAR1 reduces sensitivity to ABA-mediated inhibition of seed germination, seedling development, and primary root growth.