Rhys ab Owen (born 12 January 1987), also sometimes referred to as Rhys ab Owen Thomas is a Plaid Cymru politician. He was elected to the Senedd in the South Wales Central region in the 2021 Senedd election. ab Owen was Plaid Cymru's spokesperson in the Senedd for the constitution and justice. He is a barrister. His, father Owen John Thomas, represented the same region for the same party.