Sherwood Observatory is an amateur astronomical observatory in Nottinghamshire, England, owned and operated by Mansfield and Sutton Astronomical Society. The main dome is 6.5m in diameter and houses a 0.61 m Newtonian Reflecting telescope. There is a club meeting room that hosts society meetings and lectures and also serves as a lecture theatre for the public on open evenings. The complex has workshop, kitchen, office, storage and toilet facilities.