The article proposes a new definition of environmental competencies that facilitates the incidence of the organization in the development of people, which will show the reduction of the harmful impact on the environment, sustainable competitive advantages, and better performance in the medium and long term because of an increasingly competent staff from an environmental point of view. In its elaboration, methods and techniques such as bibliographic review, induction-deduction, analysis-synthesis, and mathematics were used, making it possible to carry out an epistemological and semantic analysis of the state of the art of environmental competencies. Subsequently, by employing Ward's method and the squared Euclidean distance, with the standardized variable, we obtained, as a result, the confirmation of groups that assume the highest-scoring variables, namely: observable behavior, motivations, sustainable business culture, green skills, environmental values, environmental knowledge and environmental performance; and the elaboration of a definition of environmental competences.