Alfriston Windmill is a tower mill at Alfriston, Sussex, England which has been converted to residential accommodation.

Alfriston Windmill was built in 1834. The mill was working until 1905 when a sail was damaged by a cow. The mill worked for another two years on two sails. In 1908, the mill was stripped of machinery, and had been converted into a house by 1910.

Alfriston Windmill is a three-storey brick tower mill. It had four Spring sails and the beehive cap was winded by a fantail. The mill drove two pairs of underdrift millstones. All that remains today is the tower, with various additions and extensions.

• Richard Saxby, 1834
• Daniel Sudbury, 1845
• William Shoesmith, 1855 - 1866
• Thomas Harvey, 1866 - 1874
• Thomas Fennell, 1881
• George Hewitt, 1907

• Hemming, Peter (1936). Windmills in Sussex. London: C W Daniel. Online version Archived 12 October 2009 at the Wayback Machine