The graduate engineers’ attitude towards environmental issues differs profoundly from that of their fellow citizens. This is what we have found out when comparing the answers given by 27,000 graduates to an original survey we conducted in 2011 with those of a representative sample of French people who participated to the “European value survey”. The engineers’ attitude is also very different from those of business managers and executives. It also differs from those of other master’s degree graduates. Contrary to our expectations, the demographic change observed in the profession (growth, place of women, development of new educa- tional tracks) has little influence on the professionals’ attitude. The engineers’ attitudes toward environmental issues seem to depend more on their professional position than on their individual traits. While the younger generation seems a little bit more pro-environment than their seniors, females do not differ significantly from their male colleagues on that topic. By contrast, we found out that the engineers’ attitude towards environment is strongly related to their attitude and values in general and their political, ethical and religious attitude in particular.