OMNNI Associates, Inc. is a full-service, engineering, architectural, and environmental consulting firm located in Appleton, Wisconsin. Clients include municipal, commercial, industrial, government and private clients.

Our team of professionals and support staff includes engineers, designers, architects, and scientists who work together in the following program areas: Architecture, Civil Engineering/Survey, Environmental Engineering, Materials Testing, Structural Engineering, and Transportation.

From proactively helping clients manage their stormwater needs to designing better and more efficient infrastructure to developing recreational facilities to meet the needs of a growing population, OMNNI has helped leaders manage change and growth for over 40 years.