Kenneth Lee Irby (November 18, 1936 – July 30, 2015) was an American poet. He won a 2010 Shelley Memorial Award.
He is sometimes associated with the Black Mountain poets, especially with Robert Duncan, Robert Creeley, and Ed Dorn.
He graduated from the University of Kansas, from Harvard University with an A.M., and from the University of California, Berkeley with a M.L.S. degree. He was a visiting professor at the University of Copenhagen on a Fulbright grant. Irby's last role was as a Professor of English at the University of Kansas.
A colloquium held at the University of Kansas on November 5, 2011 honored Irby's work, on the occasion of his 75th birthday. Contributions were made by fellow poets Joseph Harrington, Denise Low, Benjamin Friedlander, Pierre Joris, and Lyn Hejinian.
He died on 30 July 2015.