In modern society, the importance of leisure has been already recognized widely. Recently, interest in participation in more active leisure activities is growing. Furthermore, environmental concerns stemmed from global warming came to the fore. Thus, the purpose of the current study was to examine the effect of recreation specialization representing people who are participating in more active leisure activities on environmental attitudes. A total of 393 college students participating in physically active club activities were selected for this study. Main findings were as follows; First, overall recreation specialization had strong positive effect on environmental attitude. Second, out of sub-factors of recreation specialization, affective specialization had positive influence on environmental attitude. Finally, out of sub-factors of affective specialization, attraction positively affected environmental attitude. This study suggests that individuals who participate in leisure activities more actively are more conscious of environmental problems.