Manojit Mohan Dhar (1927–2003) was an Indian natural product chemist and the director of Central Drug Research Institute.

[1] He was known for his researches on peptides and the synthesis of the internucleotide bond[2] and was an elected fellow of the Indian National Science Academy.

He was known to have screened over three thousand indigenous plant species for studying their structures and through his researches, he suggested that the secondary metabolites of microbial origin were formed during the detoxification of toxic constituent of the microorganism.

He identified several active ingredients in plants and developed a new method of synthesis of internucleotide bond, using pyrimidine and purine anhydronucleosides.

[6] He was also a part of the CDRI investigation on parasitic protozoa causing diseases such as amoebiasis, leishmaniasis, filariasis, malaria and helminthiasis.