Louis Joseph Halle Jr. (17 November 1910, New York City – 13 August 1998, Geneva, Switzerland) was an American naturalist, author, U.S. State Department official, and professor of international studies in Geneva.
As a young man, he worked for a railway company in Central America and later with a publishing house in New York.
For a year, he did graduate study in anthropology at Harvard, then explored boundary rivers between Guatemala and Mexico by mule and dugout canoe.
He was a Latin American specialist employed by the US State Department Policy Planning Staff from the mid 1940s to 1954.
[2] Louis J. Halle Jr. married Barbara Mark in 1946 and was the father of five children.