The American Society of Landscape Architects (ASLA) is a professional association for landscape architects in the United States. The ASLA's mission is to advance landscape architecture through advocacy, communication, education, and fellowship.

Landscape architecture is the design of outdoor areas, landmarks, and structures to achieve environmental, social-behavioural, or aesthetic outcomes. It involves the systematic design and general engineering of various structures for construction and human use, investigation of existing social, ecological, and soil conditions and processes in the landscape, and the design of other interventions that will produce desired outcomes.