Biorefinery technologies have appeared at the forefront of the research initiatives in Japan and India. Environment, Health and welfare are the key concepts in the sustainable development goals. Medical technologies, IT, mechatronics, advanced materials have been recognized to be indispensable for attain the 17 goals. Considering the growing importance of India‐Japan partnership under such circumstances, the 4th YNU Symposium has been organized to develop strong collaborations between the researchers of these two poles.