William Lygon, 1st Earl Beauchamp

William Lygon, 1st Earl of Beauchamp (/ˈlɪɡən/; 25 July 1747 – 21 October 1816), styled Lord Beauchamp of Powyke between 1806 and 1815, was an English peer and politician.

Lygon served as Member of parliament for Worcestershire from 1775 to 1806, before being elevated to the peerage as Baron Beauchamp of Powyke and later Earl Beauchamp. He played a key role in reviving the historic Beauchamp title, presided over the family estate at Madresfield Court, Worcestershire, and helped establish the political prominence of the Lygon family, which continued through his descendants.