An election for the leader of the Green Party of England and Wales was held between 1–30 August 2025 in line with the party's constitution. It was held concurrently with the party's deputy leadership

A Scottish Greens co-leadership election occurred in the summer of 2025, and Gillian Mackay and Ross Greer were elected as co-leaders. Of the incumbent co-leaders, Lorna Slater failed in her bid for r