Khwaja Salahuddin Siddiqi graduated as a Master of Science in 1969, a Master of Philosophy in 1971, and a Doctor of Philosophy in 1973 from the Aligarh Muslim University, Aligarh, India. His specialization is inorganic chemistry. He is a former Chairman and Emeritus Professor of the department of chemistry, Aligarh Muslim University, Aligarh, India. He was appointed as a Lecturer in 1974, Reader in 1983, and Professor in 1993. His research interests are coordination chemistry, bioinorganic chemistry, organometallic chemistry, organoborate chemistry, and nanochemistry. Siddiqi has published 190 research papers in different areas of chemistry.