In this study, relationship between CO2 emissions and economic growth in Azerbaijan, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan has been investigated with the data of 1992-2014 period. CO2 emissions by metric tons per capita, CO2 emissions from liquid fuel consumption and CO2 emissions from gaseous fuel consumption are used as the data of CO2 emissions. According to results of the cross-section dependency and homogeneity test, Dumitrescu and Hurlin (2012) test is prefered for causality analysis while second generation unitroot tests are prefered for stationary analysis. According to the results, it has been found that there is a reciprocal causality relationship between the emission of CO2 and economic growth in the countries. In addition, a causality relationship running from CO2 emissions from gas and liquid consumption to economic growth is found.