Len Earl Ackland (born 1944) is a professor at the University of Colorado and co-director of the Center for Environmental Journalism.
He graduated from the University of Colorado at Boulder with a bachelor's degree in history, and from the Johns Hopkins University School of Advanced International Studies. He was a freelance writer during the Vietnam War. He was a reporter for the Chicago Tribune and the Des Moines Register. He was editor of the Bulletin of the Atomic Scientists.