The subfamily Pimplinae currently include 1,737 worldwide species in 77 genera. 78 species in 21 genera have been recorded from South Korea. Among them, the genera Exeristes, Gregopimpla and Paraperithous are small groups with 10, 8 and 6 species from worldwide. The existing South Korean Exeristes and Paraperithous include only one species, E. roborator (Fabricius) and P. chui (Uchida). Three species of genus Gregopimpla have been recorded from South Korea, G. himalayensis (Cameron), G. inquisitor (Scopoli) and G. kuwanae (Viereck). In this study, we report three newly recorded species Exeristes longiseta (Ratzeburg), Gregopimpla ussuriensis Kasparyan and Paraperithous gnathaulax (Thomson) from South Korea, including diagnoses, photographs of newly recorded species and keys to the species of South Korean Exeristes, Gregopimpla and Paraperithous.