Sir Thomas White (7 June 1492 – 12 February 1567) was an English cloth merchant, Lord Mayor of London in 1553, and a civic benefactor and founder of St John's College, Oxford and Merchant Taylors' School.

The lady Joan White, one of the daughters and heirs of John Lake, of London, gent, died October 8th, buried in this parish church, November 4th, 1573.

The lady Joan was first married to Sir Ralph Warren, knight, alderman, and twice lord mayor of London.

She was afterwards married to sir Thomas White, knight, alderman, and sometime lord may or of London, founder of the college of St. John Baptist, Oxon; by whom she had no issue.He continues the said Sir Henry Williams, alias Cromwell, had issue by the lady Joan, his wife, Oliver Cromwell, esq.

Stow's and Strypc's survey of London; Grafton's chronicle; pedigree in the possession of the miss Cromwells; lives of Oliver lord prot.