Thomas Gee Mason (born 31 December 1942) is a retired Scottish Conservative Party politician, who was a Member of the Scottish Parliament (MSP) for the North East Scotland region from June 2017 to 2021.
He was educated at King's College London (BSc, 1964) and the Cranfield School of Management (MBA 1972).
Mason first stood as the Scottish Conservative candidate for the Aberdeen Central constituency at the 1999 Scottish Parliament election, where finished in fourth place with 13.8% of the vote.
At the 2016 Scottish Parliament election, he stood again in Aberdeen Central, increasing the Conservatives' share of the vote in the constituency by 10.2%, and took third place. Mason was also placed tenth on the North East Scotland regional list.
In the 2017 Aberdeen council election he was elected to represent the Midstocket/Rosemount ward, then became depute Provost.
Mason was sworn in to the Scottish Parliament, on 20 June 2017, following the resignation of Ross Thomson.
Mason stood down at the 2021 election.