Leader of the Opposition (Wales)

Leader of the Opposition
Arweinydd yr Wrthblaid (Welsh)
Incumbent Vacant since 20 January 2026
Style	Member of the Senedd (MS)
Term length	While leader of the largest political party in the Senedd that is not in government
Inaugural holder	Dafydd Wigley
Formation	May 1999
Salary	£104,709 for 2024/25 tax year

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In the Senedd, the Leader of the Opposition (Welsh: Arweinydd yr Wrthblaid) is the leader of the Official Opposition (Welsh: Yr Wrthblaid Swyddogol), the largest political party that is not in the Welsh Government. The Leader of the Opposition leads and appoints members of the Shadow Cabinet and as such is sometimes styled as the Shadow First Minister of Wales (Shadow First Secretary before 2000).

Fron 5 December 2024 to 20 January 2026 the Leader of the Opposition in the Senedd was Darren Millar, from the Welsh Conservatives. The post is currently vacant. To date the office has been held by seven individuals from 1997, beginning with Dafydd Wigley. Three have been from Plaid Cymru and four from the Welsh Conservatives. Only one, Ieuan Wyn Jones, has gone on to serve in the Welsh Government.