The first minister of Wales, known as first secretary of Wales from 1999 until 2000, is the leader of the Welsh Government and keeper of the Welsh Seal. The first minister chairs the Welsh Cabinet and is primarily responsible for the formulation, development and presentation of Welsh Government policy. Additional functions of the first minister include promoting and representing Wales in an official capacity, at home and abroad, and responsibility for constitutional affairs, as they relate to devolution and the Welsh Government.

The Welsh Government is the devolved government of Wales. The government consists of ministers and deputy ministers. It is led by the first minister, usually the leader of the largest party in the Senedd, who selects ministers and deputy ministers with the approval of the Senedd. The government is responsible for tabling policy in devolved areas for consideration by the Senedd and implementing policy that has been approved by it.