William Irwin is a Democratic Unionist Party (DUP) politician, serving as a Member of the Northern Ireland Assembly (MLA) for Newry and Armagh since 2007.

[1] Irwin entered politics after his son, Philip, drowned in a swimming pool, and he met DUP founder, Ian Paisley.

[2] Irwin first stood for election on Armagh City and District Council in 2001, unsuccessfully contesting The Orchard DEA.

Irwin stood in the Newry and Armagh constituency at both the 2017 and 2019 General Elections, finishing second on each occasion with 24.6% and 21.7% of the vote respectively.

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