OBG was an American provider of engineering, construction, and operational services for: industrial, municipal, Federal, food and beverage, higher education, and life sciences clients.

They are headquartered in Syracuse, New York and have regional offices in 24 cities throughout the United States.

OBG was bought by a Danish company Ramboll in December 2018.

[2] The company was established in Central New York and its headquarters remains there today.

[2] OBG offers a variety of services: Municipal, Industrial, Higher Education, and Federal.