Thomas Alexander Fraser, 12th Lord Lovat and 1st Baron Lovat, was a Scottish nobleman. He was the 21st Chief MacShimidh of Clan Fraser of Lovat, succeeding to the title of his distant cousin, the 11th Lord Lovat, who had been attainted and executed as a Jacobite in 1747.

Clan Fraser of Lovat is a Highland Scottish clan and the principal branch of Clan Fraser. The Frasers of Lovat are strongly associated with Inverness and the surrounding area since the Clan's founder gained lands there in the 13th century.