PROSUL - Projetos, Supervisão e Planejamento (PROSUL - Projects, Planning and Supervision in English) is an consulting engineeering organization. Established in 1987, it has extensive experience in large infrastructure works in all areas of business. Headquartered in Santa Catarina Brazil, PROSUL has offices across Brazil.

Initially Prosul was devoted to urban development and road engineering projects. Over the years they have specialized in many other areas.