Royal Lodge, Grade II listed English country house in Windsor Great Park, England.

Royal Lodge is a Grade II listed house in Windsor Great Park, half a mile north of Cumberland Lodge. Its central section has three storeys, with two-storey wings, about 30 rooms in all, including seven bedrooms and a saloon measuring 48 by 30 by 30 feet. The original conservatory survives, and two lodges stand at the entrance.

A house stood on the site by 1662, when it was known as the Lower Lodge or Dairy Lodge, later the Deputy Ranger's House. John Nash altered it for the Prince Regent, who lived there from 1815, and Jeffry Wyatville succeeded Nash in 1823; it took the name Royal Lodge in the late 1820s. George V granted it to the Duke and Duchess of York in 1931, and wings were added in the 1930s.

The Royal Chapel of All Saints, built by Jeffry Wyatville in 1825 less than a hundred yards from the house, replaced the chapels of Royal and Cumberland Lodges, which had proved too small for the royal households. The name Royal Lodge itself came into use in the late 1820s, when the house was still called the King's Cottage.

The house sits about 3 miles south of Windsor Castle and can be seen from public paths but is not open to visitors. Surrounding routes through the park are accessible on foot or by bicycle and offer views of the outer grounds.

The grounds contain Y Bwthyn Bach, a two-thirds scale miniature house given to the future Queen Elizabeth II as a princess in 1932 by the people of Wales. The cottage has working doors and windows plus fully furnished rooms inside.