Millet, a nutritious and resilient grain, offers significant potential as a staple food. However, challenges in its processing hinder its wider adoption. Recent research shows trends in the application of ultrasound technology as a promising solution to these challenges. Ultrasound has demonstrated efficacy in improving various stages of millet processing, including dehulling, milling, and extraction. Its advantages encompass enhanced efficiency, improved product quality, and reduced energy consumption. Moreover, ultrasound treatment has shown the potential to improve the nutritional value and functional properties of millet and millet-based products. This chapter comprehensively explores the current state of ultrasound application in millet processing and their products, highlights its benefits, and identifies areas for future research to fully harness the potential of this technology for the millet industry.