This study explores the environmental friendliness of Holland's RIASEC personality types (Realistic, Investigative, Artistic, Social, Enterprising, and Conventional). It investigates how each type correlates with pro-environmental attitudes and behaviors. Findings suggest that Investigative and Artistic types exhibit strong environmental concern due to their analytical and creative natures, respectively. Social types engage in environmentally friendly activities through community involvement, while Enterprising and Conventional types participate when environmental actions align with personal or economic goals. The study highlights the need for tailored environmental education based on personality profiles to enhance pro-environmental behaviors.