Adrian Philip Ramsay is a British politician and co-leader of the Green Party of England and Wales alongside Carla Denyer since 1 October 2021. He was previously the deputy leader of the Green Party of England and Wales from 2008 to 2012. He served as a Norwich City Councillor from 2003 to 2011.

The Leader of the Green Party of England and Wales is the most senior political figure within the Green Party of England and Wales. The role was introduced alongside that of deputy leader in 2008. Prior to this, the party's public spokespersons were principal speakers. There were two principal speakers, one female and one male, who were elected annually at the Green Party's Autumn Conference and held no vote on the Green Party Executive (GPEx).