This study was conducted to compare the soil characteristic of mature Korean pine forests (41-90-year-old) among four regions (Gwangneung, Hongchun, Inje and Namwon) in Korea. Soils were sampled along the 20 cm soil depth and analyzed soil carbon (C) concentration, cation exchange capacity (CEC) and soil pH. There were significant differences in soil C concentration and CEC among the regions. Soil C concentration (%) was significantly higher (7.40) in Namwon than those in the others; 3.60 in Inje, 2.40 in Hongchun, and 2.40 in Gwangneung. CEC in Namwon (cmol_c/kg) was significantly higher (23.03) than those in the others; 15.32 in Gwangneung, 13.39 in Inje and 13.09 in Hongchun. K⁺, Na⁺ and Mg²⁺ in Namwon was higher than those in others, while Ca²⁺ was not significantly different among the regions. Soil pH was not significantly different among the regions. Soil C concentration and CEC in Namwon were estimated higher than those in the others. It might be due to higher annual mean temperature and precipitation as regional characteristics in Namwon.