Calvin (Bud) Marshall Trillin is an American journalist, humorist, and novelist. He is best known for his humorous writings about food and eating, but he has also written much serious journalism, comic verse, and several books of fiction.

Trillin attended public schools in Kansas City and went on to Yale University, where he served as chairman of the Yale Daily News and became a member of Scroll and Key before graduating in 1957; he later served as a trustee of the university. After a stint in the U.S. Army, he worked as a reporter for Time magazine before joining the staff of The New Yorker in 1963. His reporting for The New Yorker on the racial integration of the University of Georgia was published in his first book, An Education in Georgia. He wrote the magazine's "U.S. Journal" series from 1967 to 1982, covering local events both serious and quirky throughout the United States.