Sir William Heathcote, 5th Baronet, PC (17 May 1801 – 17 August 1881), was a British landowner and Conservative politician.
Heathcote entered Parliament as one of two representatives (MPs) for Hampshire in 1826, a seat he held until 1831, and in the previous year described by commentators as among those voting with the group known as Ultra-Tories.
After her death in March 1835 he married secondly Selina, daughter of Evelyn Shirley, in 1841.
Heathcote died in August 1881, aged 80, and was succeeded in the baronetcy by his eldest son from his first marriage, William.
Lady Selina Heathcote died in July 1901, having sold Hursley House to Joseph William Baxendale, of the Pickfords logistics company.