William Lansdowne

William Lansdowne may refer to:

Association football

 * William Lansdowne, Sr., better known as Bill Lansdowne, English former professional footballer who played for West Ham United
 * William Lansdowne, Jr., better known as Billy Lansdowne, English former professional footballer who played for West Ham United, Charlton Athletic, Gillingham and Kalmar

Other

 * William Petty, 2nd Earl of Shelburne and 1st Marquess of Lansdowne, British Prime Minister between 1782 and 1783.
 * William Lansdowne Beale, High Sheriff of Berkshire in 1893
 * William Lansdowne, former Police Chief of the San Diego Police Department (California)