Sir Thomas Cambell (c. 1536 – 13 February 1614) was an English merchant who was Lord Mayor of London in 1609.
Cambell was a city of London merchant and a member of the Worshipful Company of Ironmongers.
He was auditor for the city from 1584 to 1586, from 1588 to 1590 and from 1596 to 1598 and member of the committee of the East India Company from 1599 to 1600.
In 1609, he was elected Lord Mayor of London, and organised a pageant for Henry Frederick, Prince of Wales on the Thames called London's Love to Prince Henry.
His daughters married John Gore, Christopher Clitherow and Anthony Abdy.