Sheldon Jack Krys (born June 15, 1934) was United States Ambassador to Trinidad and Tobago from 1985 to 1988, Assistant Secretary of State for Administration from 1988 to 1989, and Assistant Secretary of State for Diplomatic Security from 1989 to 1992.
Sheldon J. Krys was born in New York City on June 15, 1934. He was educated at the University of Maryland, graduating in 1955.
Krys began a career in government service in 1961, when he became a consultant to the Director of the Federal Mediation and Conciliation Service. He spent 1962-65 as Director of the Department of State Reception Centers. As a member of the United States Foreign Service, he was a management officer in London 1965-66. From 1966 to 1969, he was special assistant to United States Ambassador to the United Kingdom David K. E. Bruce. In 1969, he became the State Department's Director of Personnel for Latin America. Krys, who is fluent in French and Serbo-Croatian, in 1974, was posted to Belgrade as administrative counselor. He spent 1976-77 studying at the National War College, and then served as a Foreign Service inspector 1977-79. He then became Executive Director of the Bureau of Near Eastern and South Asian Affairs in Washington, D.C. From 1983 to 1985, he was Deputy Director for Management Operations and executive assistant of Under Secretary of State for Management Ronald I. Spiers.