Abstract: This paper examines the dynamic relationship between human capital, energy consumption, CO_2 emissions and economic growth in Cameroon over the period 1980-2014. The autoregressive error correction method (ARDL) was used to estimate the coefficients of the specified models. The results show the existence of a long term relationship between the variables. This allowed us to estimate an Error Correction Model (ECM). In the long term, emissions of CO_2 emissions positively and significantly influence economic growth while energy consumption negatively and significantly influences human capital. The same results are observed in the short term with, in addition, a positive and significant influence of economic growth on〖 CO〗_2. The Cameroonian state would benefit from encouraging initiatives aimed at reducing CO_2emissions, while supporting those that develop and promote renewable energies such as solar and biomass.