Thatcher is an English occupational surname for a "roofer" who covered houses with straw and reed. It is known worldwide through British prime minister Margaret Thatcher, and as a first name it fits the American liking for crisp two-syllable surnames like Fletcher and Archer. Thatcher entered the US top 1000 in 2013, peaked at number 798 in 2019 and has slipped to number 1111 in 2025.