Newcomen

Newcomen may refer to:

People

 * John Newcomen (c.1613–1630), English first white settler murdered by another white settler in Plymouth Colony, Massachusetts
 * Matthew Newcomen (c. 1610–1669), English nonconformist churchman
 * Thomas Newcomen (1663–1729), English ironmonger and inventor

Other uses

 * Viscount Newcomen, of Mosstown in the County of Longford, a title in the Peerage of Ireland
 * Newcomen baronets, of Kenagh in the County of Longford, a title in the Baronetage of Ireland
 * Newcomen Society, a British learned society
 * Newcomen Society of the United States, an educational foundation
 * Newcomen atmospheric engine, a device to harness the power of steam to produce mechanical work