Seadle (born 1950) is an information scientist and historian.
He is professor for digital libraries at the Berlin School of Library and Information Science at Humboldt-Universitaet zu Berlin.
He was Chair of the iSchools from 2014 to 2016.
In 2017 he became the Executive Director with a term until March 2020.
In 2016 he became one of the founders of the Humboldt-Elsevier Advanced Data and Text Centre (HEADT Centre) at Humboldt-Universität zu Berlin.