Samuel Flagg Bemis (born October 20, 1891 in Worcester, Massachusetts; died 1973) was a Pulitzer Prize winning historian and biographer. He was also a former President of the American Historical Association and a specialist in American diplomatic history.
Samuel Bemis received his degree from Clark University and in 1916 gained his Ph.D. from Harvard University. In 1924 he garnered attention for a work on John Jay. He would later win the 1927 Pulitzer Prize for History for his book Pinckney's Treaty. His best known work might be his John Quincy Adams and the Foundations of American Foreign Policy, which won the Pulitzer Prize for Biography or Autobiography in 1950. Bemis took a generally positive view of John Quincy Adams and believed Adams grasped "the essentials of American policy and the position of the United States in the world." He was later the editor of 18 volumes of The American Secretaries of State and Their Diplomacy