The ARC Centre of Excellence in Coherent X-ray Science (CXS) is an Australian government initiative that began in July 2005 to explore what can be achieved with X-ray optics; including an understanding of exotic phenomena such as X-ray phase discontinuities.

Mission: To be the world leader in the development of coherent X-ray diffraction for imaging biological structures.

CXS head office and administrating institution is the University of Melbourne in Victoria Australia, with participating nodes at La Trobe University, Swinburne University of Technology, Griffith University and the CSIRO. All work produced by CXS is done so with the assistance of the Australian Research Council under the Centre of Excellence program.