Thomas Robert "Tommy" Dewar, 1st Baron Dewar (6 January 1864 – 11 April 1930) was a Scottish whisky distiller who, along with his brother John Dewar, built their family label, Dewar's, into an international success. They blended their whisky to make it more appealing to the international palate and Dewar demonstrated particular skills in marketing, travelling the world to find new markets and promote his product, exploiting romantic images of Scotland and tartan in his advertising.
Dewar was born in 1864 in Perth, Scotland. The son of John Dewar, Sr., he was exposed at a very young age to the spirit industry in Scotland as his father founded the John Dewar & Sons, Ltd. He earned his education in Perth, as well as in Edinburgh and he soon realised that farming was not his calling.
After his father's death Dewar worked with his brother John A Dewar Jr to continue and grow their family's brand. Gifted with a charisma, Dewar was able to expand his father's business on a global scale.
Leaving his brother in Scotland to run the business, Dewar set out to publicise their brand to the world. Visiting 26 countries over the course of 2 years, the Dewar's brand was put on the map as one of the premier Scotch whiskies available. Dewar kept a journal of his travels which were consolidated and published in the book titled, "Ramble Round the Globe," published by Chatto and Windus in 1894. In 1923 Dewar purchased the Glen Ord Distillery and two years later the Dewar brothers took their company to join the Distillers Company Ltd, both joining the board.
Dewar was a justice of the peace for Kent and a Lieutenant of the City of London, Sheriff of London in 1897, and then entered politics as the unsuccessful Conservative candidate at the Walthamstow by-election in 1897. At the general election in October 1900 he was elected as the Member of Parliament for Tower Hamlets, St George, holding the seat until he stood down in 1906. During this period, Dewar was noted for his hostility to "pauper immigration" and played an active part in campaigning for the legislation that became the Aliens Act 1905. As the predominant emigrant group arriving in the East End in this period were Jews from Eastern Europe, Dewar's statements have been generally regarded as anti-Semitic.