Thomas J. Welby is a politician who is a member of Galway County Council since 2004.
Welby served as Mayor of County Galway from 2012 to 2013. He was first elected as a county councillor on 11 June 2004, a year to the day after his father, Tom Welby, died. Welby Sn. served as a Fianna Fáil county councillor for seventeen years, rising to the position of Leas-Chathaoirleach/Vice-Chairperson of the council.
Welby joined the Progressive Democrats in 2003 but resigned in 2008, running as an independent in the 2009 local elections, topping the poll in the Connemara electoral area. He repeated his poll topping performance in the same electoral area, now renamed the Connemara Municipal District in the 2014 local elections.