In the present study, we report two lepidopteran pests on the cones of Abies koreana E. H. Wilson; Cydia sp. of Tortricidae and Dioryctria abietella Denis et Schiffermüller of Pyralidae. Larvae of these species bored tunnels inside the immature cones of the host plant. Damaged cones are easy to spot by reddish brown excretion from the pest entry holes, and the cones severly damaged by the larvae becomes crooked. Damage rate on the cones reached up tp 71% from the collection site. Regarding the two pests, some basic information such as collection records, morphological characters, and ecology were provided.