Fosdick can stand for:
Places Fosdick-Masten Park High School, an historic public high school building in Buffalo, New York Fosdick Mountains, a mountain range in Antarctica
People Harry Castlemon (1842–1915), nom de plume of American author Charles Austin Fosdick Dorothy Fosdick (1913–1997), American foreign policy expert Harry Emerson Fosdick (1878–1969), American clergyman Nicoll Fosdick (1785–1868), American merchant and politician W. W. Fosdick (1825–1862), American lawyer, poet, writer and song lyricist
Other uses Fearless Fosdick, a comic strip hero from Al Capp's Li'l Abner