Olbrich Botanical Gardens is a 16-acre outdoor botanical garden and 10,000-square-foot conservatory in Madison, Wisconsin.[1] Founded in 1952 and named for its founder, Michael Olbrich, the gardens are owned and operated jointly by the City of Madison Parks and the non-profit Olbrich Botanical Society.

Noteworthy additions to the gardens were the Bolz Conservatory in 1991, and a Thai sala, a gift to the University of Wisconsin–Madison from the Thai Chapter of the Wisconsin Alumni Association and the government of Thailand through its king, Bhumibol Adulyadej. Opened in 2002, it is one of only six sala outside of Thailand and one of two in the United States (the other is located in Hawaii).