Characteristics of forest fires in Korea using national forest fire statistical data over a 29-year period, from 1990 to 2018, were analyzed in this study. Among the causes of forest fires, the most frequent was visitors to the mountain. Even though the proportion of forest fires from mountain visitors has been gradually decreasing over the years as compared with the other causes, it is still the most frequent in each region. However, in cities with high populations, such as Seoul, Incheon, and Busan, the number of fires caused by smoking and children was relatively large as compared with other regions. Thus, the results are influenced by the population and meteorological characteristics of each region. Kruskal-Wallis nonparametric variance analysis was performed to analyze regional differences according to causes of forest fires during the spring fire seasons. The analysis showed significant differences among the top three regions that had the highest occurrences of forest fires. The results showed that the number of forest fires from farmers was significant in Jeollanam-do and Chungcheongnam-do during the month of February, whereas the number from visitors to the mountain was significant in Gangwon-do and Chungcheongbuk-do during the month of May. Keywords: Forest Fire, Forest Fire Occurrence, Forest Fire Cause, Spring Forest Fire Seasons