Morris Dempson Busby (born March 15, 1938) is an American career diplomat who served as United States Ambassador to Colombia from 1991 to 1994, during which Pablo Escobar was killed.

Prior to this, he served at the Department of State as a special envoy for Central America, 1988–1989; Principal Deputy Assistant Secretary of State for Inter-American Affairs, 1987–1988; and Director of the Nicaraguan Coordination Office, 1987.

[1] On May 15, 1991 President George H. W. Bush nominated Busby to be United States Ambassador to Colombia.

[2] During his tenure, on December 2, 1993 the leader of the Medellín Cartel, Pablo Escobar was shot dead by Colombian National Police.

[4] After being Ambassador, in 1995 he has served as President of BGI, Inc., an international consulting firm.