The integration of green technologies into phytochemical research marks an important step toward environmentally sustainable methods for obtaining natural products. Phytochemicals, plant-derived compounds with biological activity, have gained growing attention for their medicinal value and wide-ranging applications in drug development, health supplements, and cosmetic formulations. Nevertheless, conventional extraction methodologies are frequently characterized by the utilization of hazardous organic solvents and substantial energy requirements, which in turn exacerbate environmental burdens, compromise phytochemical integrity, and introduce safety concerns. Techniques categorized as green extraction, encompassing microwave-assisted extraction (MAE), ultrasound-assisted extraction (UAE), supercritical fluid extraction (SFE), pressurized liquid extraction (PLE), and pulsed electric field (PEF), provide sustainable alternatives that lower energy requirements, reduce reliance on solvents, and curtail waste generation, all while enhancing process efficiency and safeguarding bioactive compounds. Recent progress highlights the application of environmentally benign solvent systems, including bio-derived solvents, pharmaceutically acceptable excipients, ionic liquids (ILs), and deep eutectic solvents (DESs), all of which exhibit biodegradability, renewability, and low toxicity. Despite these promising developments, challenges persist in the standardization, selectivity, and scalability of green extraction methods. Addressing these issues requires interdisciplinary collaboration, regulatory support, and continuous technological innovation. Novel computational approaches, including artificial intelligence (AI) and machine learning (ML), provide promising avenues for optimizing extraction conditions, improving reproducibility, and expediting process development. The present chapter delivers a detailed exploration of eco-friendly technological innovations within phytochemical production, underscoring their relevance to research, industry, and sustainability. Framed within the Bio-Circular-Green (BCG) economic model, green extraction technologies are positioned as key drivers of sustainable growth, resource conservation, and global competitiveness in the herbal and natural product industries.