The Workshop on Polarized Sources, Targets and Polarimetry is sponsored by the International Spin Physics Committee and has been a tradition for more than 20 years, moving between the USA, Europe and Japan. The XVth International Workshop on Polarized Sources, Targets and Polarimetry (PTSP 2013) will take place at the University of Virginia, Charlottesville, USA, and will be co-hosted by the University of Virginia and Jefferson Lab, whose scientists have long been active in spin physics and in fundamental symmetry measurements. The workshop addresses the physics and technological challenges related to polarized gas/solid targets, polarized electron/positron/ion/neutron sources, polarimetry and their applications.