Abstract: To determine the repellent and larvicidal activities of five essential plant oils such as citriodora oil (Corymbia citriodora var. C.), citronella oil (Cymbopogon nardus var. L.), clove oil (Syzygium aromaticum L.), Gaultheria oil (Gaultheria procumbens L.) and lemongras oil (Cymbopogon citratus) against Tribolium castaneum. Repellent and larvicidal activities of citriodora, citronella, clove, gaultheria and lemongras oils were tested against T. castaneum. Significant effect has been observed in all tested essential oils compared to control, even though citriodora oil shows more significant than other four oils. Citriodora oil was recorded maximum repellent activity (95.24%) and larval mortality (81.86%) against larvae of T. castaneum at 20 μL mL–1. This plant oil showed potential to be used as bio-pesticides in the management of T. castaneum pest.