Robert Pelton Sibley (March 26, 1879 - November 3, 1957) was an American academic and a headmaster of Deerfield Academy.

Born in Westfield, Mass., Sibley graduated from Amherst College in 1900. At commencement, he was awarded the Henry D. Hyde prize in oratory, a victory reported in the New York Times.

From 1900 to 1902, he was the fiftieth head of school, or principal as the position was then known, of Deerfield Academy. He was succeeded by the legendary Frank Boyden.

In 1903, he graduated from Columbia University with a Master of Arts degree.

In 1907, he took up a post as an instructor in English at Ohio Wesleyan University.

From 1909 to 1920, he was professor of English language and literature at Lake Forest College, where he also served as registrar. In his final year there, the University awarded him an honorary doctorate in humane letters.

From 1920, he was a faculty member and secretary of Cornell's College of Agriculture and Life Sciences. Six years later he was transferred to the College of Arts and Sciences. There he would serve as assistant dean, secretary of the university faculty, and chairman of the faculty committee on student affairs.

Robert Young Pelton (b. July 25, 1955, Edmonton, Alberta, Canada), is an author, journalist and documentary filmmaker. Pelton's journalistic work usually consists of conflict reporting and interviews with military and political figures in warzones. His career is notable because of the number of conflict zones he has reported from and the breadth of important figures he has interviewed. His reputation is built on his professed ability to enter forbidden, deadly and violent places.

Pelton has been present at conflicts such as the Battle of Qala-i-Jangi in Afghanistan, the Battle of Grozny (1999-2000) in Chechnya, the rebel campaign to take Monrovia in Liberia and approximately 40 other conflicts. He survived an assassination attempt in Uganda He spent time with the Taliban and the Northern Alliance pre 9/11, the CIA during the hunt for Bin Laden and also with both insurgents and Blackwater security contractors during the war in Iraq Pelton's regularly published survival and political guide The World's Most Dangerous Places, provides practical and survival information for people who work and travel in high risk zones, and is a bestseller. With the book's bestseller status Pelton has become an expert on work and travel in "high-risk" environments. He was also host of the Discovery Travel Channel series Robert Young Pelton's The World's Most Dangerous Places from 1998 to 2003. Now residing in Los Angeles, California, Pelton currently writes books, produces documentaries on conflict-related subjects and operates Cultural Engagement Journeys into the World’s Most Dangerous and forbidden places.