The purpose of the current study is to determine the pre-service classroom teachers' environmental awareness and attitudes and to elicit the relationship between their awareness levels and attitudes in terms of gender, grade level and state of membership to an environmental organization. The study was designed according to relational survey model. The study group of the current research is comprised of the pre-service classroom teachers attending two universities located in the Aegean Region in 2015-2016 school year. "Environmental Awareness Scale (EAWS)" developed by Okur (2012) and "Environmental Attitude Scale (EATS) were used to collect data. The collected data were analyzed with SPSS 20 program package by using descriptive statistics and Pearson coefficient. As a result of the analyses, it was found that the pre-service classroom teachers' environmental awareness levels and attitudes are high; there is a positive and medium correlation between their awareness levels and attitudes. Moreover, it was found that environmental awareness can predict 27% of environmental attitude. In light of these findings, it can be suggested that within the courses given throughout the undergraduate education, pre-service classroom teachers should be informed about environmental issues and encouraged to participate in environmentally-oriented social and cultural activities.