Colonel William Kelsey Lanman Jr., (October 9, 1904 - March 27, 2001) was a notable benefactor of Yale University.
He served as an aviator in the United States Marine Corps from 1935 to 1955, and later took up real estate and investment management.
His father, William K.
Lanman Sr., was chairman of the Columbus Bolt Company in Ohio.
William K.
Lanman Jr.
graduated from Yale University in 1928 (B.S.
from Sheffield Scientific School), as had his ancestor United States Senator James Lanman, who graduated from Yale College in 1788.
Colonel Lanman's two brothers graduated from Yale College: Henry Reese Lanman in 1932, and Jonathan Trumbull Lanman in 1940 and from the Yale School of Medicine in 1943.