Hosmer is a surname. Notable people with the surname include:
Bradley C. Hosmer, twelfth Superintendent of the United States Air Force Academy
Craig Hosmer (1915-1982), United States Representative from California
Eric Hosmer, baseball player
Frederick Lucian Hosmer (1840-1929), American Unitarian hymnist
Harriet Goodhue Hosmer (1830-1908), American sculptor
Hezekiah L. Hosmer (1765-1814), U.S. Representative from New York
Hezekiah Lord Hosmer (judge) (1814-1893), American lawyer, judge, journalist, and author
Ralph Hosmer, Hawaii's First Forester
Stephen Hosmer (1763-1834), Connecticut jurist
Titus Hosmer (1736-1780), Continental Congressman from Connecticut and father of Stephen Hosmer
Thomas Hosmer Shepherd, English watercolor artist
