Khondkar Siddique-e-Rabbani (born 9 May 1950) is a Bangladeshi Biomedical physicist and notable for developing the Focused Impedance Measurement method.
In 2008, he was awarded the Academy Gold Medal by Bangladesh Academy of Sciences for his contribution to physical sciences in Bangladesh.
Rabbani is the founding chairperson of the Department of Biomedical Physics and Technology (BMPT) at the University of Dhaka.