Tester (surname)

Tester, and variants Testar and Testard, is a surname of French origin, originally given as a nickname to one with a large head.

The name may refer to:

In the arts

 * Desmond Tester (1919–2002), Anglo-Australian actor
 * Ruth Tester (1903–1993), American actress
 * Scan Tester (1887–1972), English folk and country musician
 * William Tester (born 1960), American novelist

In politics

 * John Tester (1835–1918), American politician and businessman
 * Jon Tester (born 1956), U.S. Senator from Montana

Other people

 * Mark Tester (born 1963), Australian botanist
 * Ralph Tester (1902–1998), head of the Testery, a British codebreaking station at Bletchley Park