Baron Bicester, of Tusmore in the County of Oxford, is a title in the Peerage of the United Kingdom.^[2] It was created on 29 June 1938 for the banker Vivian Smith. As of 2018 the title is held by his great-grandson, the fifth Baron, who succeeded his first cousin once removed in 2016.

The Barons Bicester are related to the Barons Carrington. The first Baron Bicester's great-grandfather, John Smith MP (1767–1842), was the youngest brother of Robert Smith, 1st Baron Carrington. Also, John Smith's father, Abel Smith MP (1717–1788), had two elder brothers: George Smith (1714/15–1769), created a baronet in 1757 (see Bromley baronets), and John Smith (born 1716), the great-grandfather of Julian Pauncefote, 1st Baron Pauncefote.

• Vivian Hugh Smith, 1st Baron Bicester (1867–1956)
• Randal Hugh Vivian Smith, 2nd Baron Bicester (1898–1968), son of his predecessor
• Angus Edward Vivian Smith, 3rd Baron Bicester (1932–2014), nephew of his predecessor
• Hugh Charles Vivian Smith, 4th Baron Bicester (1934–2016), brother of his predecessor
• Charles James Vivian Smith, 5th Baron Bicester (born 1963), first cousin once removed of his predecessor

The heir apparent is his son, Milo Louis Vivian Smith (born 2007).

• Baron Carrington
• Bromley baronets
• Bicester
• Smith's Bank

• Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990, ^{[page needed]}

• Hansard 1803–2005: contributions in Parliament by Angus Edward Vivian Smith, 3rd Baron Bicester