Biting midges of the genus Culicoides Latreille are important pests of humans and livestock and many species act as vectors of important medical and veterinary pathogens. Culicoides and other biting flies were collected using black light traps set near nine cowsheds, as described by Kim et al., and New Jersey light traps set at 10 US army installations and one military training site from May to October, 2010– 2011 as part of the Animal and Plant Quarantine Agency and 65th Medical Brigade (Eighth US Army, Korea) arthropod-borne disease surveillance program. Culicoides spp. were separated and identified to species using the keys and descriptions of Arnaud, Wada and Yu et al. and checklist of Cho and Chong. Kim et al. provided a brief summary of the history of research into the Culicoides fauna of the ROK noting the presence of several species of medical and veterinary importance. There are currently 28 species of Culicoides reported from the ROK and the presence of additional species has been reported by Cho & Chong, Kang & Yu and Lee, suggesting that the fauna has not yet been fully documented. Additionally, recent uses of DNA barcoding, by Bellis et al. have clarified the status of several species of Culicoides elsewhere and if applied more fully to Korean material, will likely reveal more records and perhaps new species. Surveys of adult biting midges from the ROK resulted in the discovery of three species previously not known from the ROK. So a total of 31 species of Culicoides are now known from the ROK. This study reports the presence of C. nasuensis Kitaoka, C. pallidulus Yu and C. jacobsoni Macfie from the ROK and an updated checklist of the Culicoides fauna of the ROK.