This study aims to determine the variables that predict high school students' recycling behaviors. The study was designed as survey model. The study's sample consists of 203 students at a high school in Ankara. A recycling behavior scale developed by the researchers was used as a data collection tool. The scale has 3 dimensions: recycling behavior, recycling interest and recycling preferences. The reliability coefficient of the scale was determined to be 0.90. The data were analyzed using Pearson's correlation and multiple regression with the SPSS 18 package program. A significant correlation was found between high school students' recycling behaviors and variables such as environment anxiety, recycling knowledge and environmental student club membership. Also, as a variable, recycling knowledge was found to be a significant predictor of recycling behavior in general and its behavior and preferences dimensions. Recommendations are offered based on these results.