Trevor Lunn (born 29 June 1946) is an independent politician in Northern Ireland and former member of the Alliance Party. He was elected to the Northern Ireland Assembly for Lagan Valley in the 2007 assembly election. Lunn took over the Alliance candidacy for Lagan Valley from Seamus Close, the longtime representative for the area. While many pundits predicted that Alliance would struggle to hold on to the seat, Lunn's performance saw the new candidate elected fourth out of the six seats available. He retained the seat at the 2011 Assembly election. He is a former chairman of the Alliance Party.