Sir Thomas Johnstone Lipton, 1st Baronet, KCVO (10 May 1848 – 2 October 1931) was a Scotsman of Ulster-Scots parentage who was a self-made man, merchant, and yachtsman. He engaged in extensive advertising for his chain of grocery stores and his brand of Lipton teas. He boasted that his secret for success was selling the best goods at the cheapest prices, harnessing the power of advertising, and always being optimistic. He was the most persistent challenger in the history of the America's Cup.