Leslie Langdon "Bud" Vivian Jr., March 24, 1919 – October 18, 1995) was an American academic administrator. A lifelong employee at Princeton University, Vivian retired in 1986 after a 37-year administrative career which ended with 16 years as the Director of Community and Regional Affairs. After his death in 1995, classmates from the Princeton University Class of 1942 set up an annual award to honor his service to the community: The Leslie “Bud” Vivian Award for Community Service.