This study aimed at clarifying the differences between the biggest and smallest attendances in the J. League, as influenced by away club. The background is that case management using the popularity of the away club was reported, and precedence research was done to analyze the attendance according to away club.<BR>    We analyzed the J. League from 1993 to 2010 to clarify the influence of the away teams on away game match attendance. We searched for the differences between match attendance in away games and the season average match attendance of home clubs over 18 seasons.<BR>    The following results were obtained. In 18 seasons, 4 clubs had maximum differences and 8 clubs had minimum differences. The difference between maximum and minimum attendances was 10,000 to 15,000. Regarding the trend since 2001, we found that the differences tended to be larger.<BR>    From the obtained results, it was considered that club management in the J. League should consider the influence of the popularity of away clubs on attendance.