List of Famous people who born in 1909

Guillermo León Valencia Muñoz was a Colombian politician, lawyer and diplomat who served as the 21st President of Colombia from 1962 to 1966.

Randi Heide Steen was a Norwegian soprano singer.

Gunnar Edvard Heckscher was a Swedish political scientist and leader of the Rightist Party (Högerpartiet), which later became the Moderate Party.

Stanisław Marcin Ulam was a Polish-American scientist in the fields of mathematics and nuclear physics. He participated in the Manhattan Project, originated the Teller–Ulam design of thermonuclear weapons, discovered the concept of the cellular automaton, invented the Monte Carlo method of computation, and suggested nuclear pulse propulsion. In pure and applied mathematics, he proved some theorems and proposed several conjectures.

Nelson Algren was an American writer. His 1949 novel The Man with the Golden Arm, won the National Book Award, and was adapted as the 1955 film of the same name.