Maryland Route 566 (MD 566) is a state highway in the U.S. state of Maryland. Known as Stillpond Harmony Road, the highway runs 1.19 miles (1.92 km) from MD 292 in Still Pond east to MD 298 near Still Pond in northern Kent County. MD 566 was constructed from Still Pond east to MD 298's intersection with MD 213 in the late 1940s. The highway was relocated in Still Pond in the late 1950s. MD 298 assumed much of MD 566's course in the early 1960s.