Laboratory experiments were conducted to ascertain the efficacy of oils of neem (Azadirachta indica), linseed (Linum usitatissimum), safflower (Carthamus tinctorius), sunflower (Helianthus annuus) and sesame (Sesamum indicum) against Callosobruchus chinensis on mungbean seeds (Vigna radiata). Four concn, 0.5, 1.0, 2.0 and 4% (v/v), of each oil were tested. All the concn of each oil significantly reduced oviposition and adult emergence of the pest. Only 1.33, 1.11, 10.00, 1.67 and 0.78 eggs and 0.00, 0.44, 3.11, 0.22 and 0.44 adults were recorded on mungbean seeds treated with 4% oil of neem, linseed, safflower, sunflower and sesame, resp., compared to 31.67 eggs and 13.78 adults in the control. Neem oil at 4% completely protected the pulse seed from attack, while only 2.00, 11.27, 2.08 and 1.96% of seed loss were recorded at the same concn of linseed, safflower, sunflower and sesame oil, resp., compared to 56.27% in the control. The effectiveness of oils increased with the increase of the concn in all cases. Among the oils tested neem oil was the best protectant of pulse seeds against C. chinensis.