Indian mustard is an important oil seed crop of India. Many factors are attributed to its low productivity. Among them White rust/white blister of mustard is most important. In the present study 47 genotypes were screened against white rust under natural conditions during the Rabi season 2020-21. The categorization of mustard cultivars have been carried out on the basis of percent stag head formation using a 0-9 scale. Out of 47 genotypes two (PM26 &ChhutkiSarsho) were found resistant, 12 (NRCHB101, JM3, Kalawati, Local2, DRMR1665, Farm Sona, Pusa Vijay, Karuna, Super Kala Sona, Super Maha Gold G9, Maya & RH406 ) were moderately resistant, 18 (Rohini, Mahiko, RGN73, Rohini, PM28, Gold Star, Local1, PM30, US126, Pusa Mahak, Pusa Tarak, Mustard2541, RVM3, Kaalia, PM0031, Radhika, Vasundhara & Basanti) were susceptible and 15 (Varuna, Divya203, NRCDR02, Kala sona, PM11, Pusa26, PBR210, YBH402, DRMRIJ31, DRMR150-35, Ganga, RH0119, Sej02, MS2, Pitambari) were found highly susceptible. None of the genotypes were found to be Immune or highly resistant.