George Waldo State Park is an undeveloped public recreation area in Southbury, Connecticut, on the eastern shore of Lake Lillinonah. Managed by the Connecticut Department of Energy and Environmental Protection, it supports hiking, mountain biking, horseback riding, fishing, and hunting. The park is named for George Curtis Waldo, who chaired the Connecticut Park and Forest Commission in the 1940s and owned the Bridgeport Post. After Waldo died in 1956 at age 68, George C. Waldo State Park appeared in the State of Connecticut Register and Manual in 1957. Its main route is a moderately challenging 2.1-mile loop, and its significance lies in simple access to woods, trails, and lakeshore scenery.