Katharine Lee Bates (August 12, 1859 – March 28, 1929) was an American songwriter. She is remembered as the author of the words to the anthem "America the Beautiful". She popularized "Mrs. Santa Claus" through her poem Goody Santa Claus on a Sleigh Ride (1889).
Bates was born in Falmouth, Massachusetts, the daughter of a Congregational pastor. She graduated from Wellesley College in 1880 and for many years was a professor of English literature at Wellesley. While teaching there, she was elected a member of the newly formed Pi Gamma Mu honor society for the social sciences because of her interest in history and politics, which she had also studied.
Bates was a prolific author of many volumes of poetry, travel books, and children's books. She popularized Mrs. Claus in her poem Goody Santa Claus on a Sleigh Ride from the collection Sunshine and other Verses for Children (1889).