In this research, the attitude and opinions of parents towards high school students' participaton in extracurricular sport activities were investigated. The research, fictionalized by explanatory sequential design amongst the mixed approach designs in which quantitative and qualitative approaches are used together, was applied on parents of high school students participating at different high schools in 2014-2015 academic years fall semester in Kirikkale. As a data collection tool, "Parent Attitude Scale towards Extracurricular Sport Activities" developed by Yilmaz & Guven (2015) and "Semi-structured Interview Form" created by researcher were used. In the analysis of survey data from the quantitative phase of the research, t-test, analysis of variance (ANOVA), Pearson correlation test was used as statistical methods. In qualitative data analysis, it was benefited from content analysis technique. According to research findings, it was figured out that significant difference were determined considering the state of parent's education, income state of family, students' grade level. In the part of qualitative part of research; it was determined that parents had positive opinions on extracurricular sport activities; they supported attendance of children to these activities.