Sara Teasdale (August 8, 1884 – January 29, 1933), was an American lyrical poet. She was born Sarah Trevor Teasdale in St. Louis, Missouri.

Throughout her life, Teasdale suffered poor health and it was only at age 9 that she was well enough to begin school. In 1898 she went to Mary Institute and to Hosmer Hall in 1899 where she finished in 1903.

In 1913 Teasdale fell in love with poet Vachel Lindsay. He wrote her daily love letters, but nevertheless she married Ernst Filsinger in 1914 when she was 30; he was a rich businessman. Teasdale and Lindsay remained friends throughout their lives.