John Hugh Crimmins (November 26, 1919 – December 12, 2007) was a diplomat and former United States Ambassador to Dominican Republic (1966–69) and Brazil (1973–78).

[1] He was a member of the American Academy of Diplomacy.

[2] He graduated from Harvard University in 1941.

During World War II he served with the army in the Pacific theatre of operations.

[2] He was buried in Arlington National Cemetery.