Antonio Di Mambro + Associates, Inc. (AD+A) is a design and planning firm with expertise in the fields of architecture, city planning, and urban design. Established in Boston, Massachusetts in 1980 (under the name Comunitas until 1985), AD+A integrates conceptual and technical skills with extensive professional experience in the United States and abroad. The firm's multi-disciplinary team offers a full range of services allowing it to foster projects from conception to completion. The firm has worked on projects in New England, Washington D.C., the southern United States, Puerto Rico, and Italy.

AD+A has received national and international awards, including two first place awards for entries in the 1988 Boston Visions national competition and First Prize in the 1990 international design competition for a waterfront park in Venice, Italy. For its work on this project, the firm received the AIA Honors Award for Urban Design in 1997. In 2001, AD+A received the Willo von Moltke Honor Award for Urban Design Excellence for the Caguas 2020 Urban Zone Study in Caguas, Puerto Rico.