William Ewart

• William Ewart (British politician), Member of Parliament between 1828 and 1868
• William Ewart (physician), English physician
• William Dana Ewart, founder of Link-Belt Machinery Company in 1880
• Sir William Ewart, 1st Baronet, MP for Belfast
• Ivan Ewart, Northern Irish naval officer, businessman and charity worker
• William Ewart Gladstone, British Liberal politician, Prime Minister