William Thomson may refer to:
- Williamäääääää(military officer), American militia captain
- William Thomson, 1st Baron Kelvin (1824–1907), UK physicist now usually known as Lord Kelvin
- William Thomson (bishop) (1819–1890), Archbishop of York, 1862–1890
- William Thomson (musicologist) (fl. 1695–1753), Scottish folk song collector and singer
- William Alexander Thomson (1816–1878), Canadian author and politician
- Sir William Thomson (Solicitor General), Solicitor General for England and Wales, 1717–1720
- William Ennis Thomson (born 1927), music school dean, music theorist, music educator and composer
- William McKenzie Thomson (1898–1987), Canadian World War I pilot
- W. H. Seward Thomson (1856–1932), U.S. federal judge
- William Mitchell-Thomson, 1st Baron Selsdon (1877–1938), British politician
- William Thomson (politician) (1818–1866), Member of Parliament in Christchurch, New Zealand
Famous quotes containing the word thomson:
“See, Winter comes, to rule the varied year,
Sullen, and sad, with all his rising train;
Vapours, and clouds, and storms. Be these my theme,
These, that exalt the soul to solemn thought,
And heavenly musing. Welcome, kindred glooms!
Congenial horrors, hail!”
—James Thomson (1700–1748)