Andrew N. Cleland (born 17 September 1961) is an American physicist, and is currently the John A. MacLean Sr.
Cleland received his Bachelor of Science in engineering physics at the University of California at Berkeley in 1983, and his PhD in physics in 1991, also at the University of California at Berkeley.
He pursued postdoctoral research at the Centre d'Etudes Nucleaires (CEN) in Saclay, France, then worked as a postdoc and ultimately as a senior research fellow at the California Institute of Technology, before joining the faculty of the Department of Physics at the University of California at Santa Barbara.
Cleland has made significant contributions to the fields of superconductivity, in particular the development of Josephson junction-based superconducting quantum circuits, as well as in the fields of nanomechanics, and microfluidics.
He has published over 130 refereed journal articles, as well as a textbook on nanomechanics.