The Peace Institute (also known as the Peace Fellowship) was an organization of the Human civilization based in the city of Stockholm on the planet Earth in the 21st century, dedicated to peace and nonviolent conflict resolution.
History and specifics[]
A former student of Professor Jeremy Grayson headed the Institute in the year 2045, and in that year, they appointed Grayson their representative to observe the government's questioning of two extraterrestrials stranded on Earth. (TOS novel: Strangers from the Sky)