This study is to investigate the causality between human capital, energy consumption, CO2 emissions, and economic growth in Bangladesh. The data used world development indicator has obtained from the World Bank database during 1986-2017. The analysis method used the vector error correction model (VECM). The finding of this study, first, neither CO2 emissions nor employment cause economic growth in the long-run causality. Secondly, there is no causal evidence from the human capital, CO2 emission per capita, and real GDP to consumption energy per capita. The third is there is no causal evidence from the human capital, consumption energy per capita, and real GDP per capita toward CO2 emission per capita. Forth, there is no causal evidence from the human capital, consumption energy per capita, and CO2 emission to real GDP in the long-run causal. Therefore, in the last findings, there is no causal evidence between human capitals, carbon emission to GDP. There is the validity of long-run balance causality that exists only for the model of neither human capital nor energy consumption.