Mandayam Osuri Tirunarayana Iyengar (1895-1963) was an Indian medical entomologist and malariologist. He worked as an entomologist in the Department of Malaria Research, Bengal and studied mosquitoes. The mermithid parasite Romanomermis iyengari and the mosquito species Culex iyengari are named in his honor.
- Developmental Stages Of Filariae In Mosquitoes
- Iyengar, R; Gandhi, Tara; Tyagi, B. K.; Arunachalam, N.; Rajendran, R. (2009). Dr. M.O.T. Iyengar bio-bibliography of an eminent medical entomologist. Chennai: Indian Council of Medical Research Centre for Research in Medical Entomology; 3rd Conference of Medical Arthropodology Madurai, India 18-19 December 2009.