The Cambridge Workshops have been held biennially since 1980. They represent an important venue for cool star researchers to present their work, meet with colleagues from around the world, and evaluate the current state of the field. This is an exciting time for solar-stellar astronomy with spectacular results from space missions, such as the Chandra X-ray Observatory, XMM-Newton, Hubble Space Telescope, FUSE, SOHO, and TRACE, and from ground-based facilities, including new ventures into helio- and astero-seismology, adaptive optics, interferometry, and IR spectroscopy. The aim of this workshop is to provide a timely forum for discussion of a range of topics related to cool stars and the Sun, and the future directions that our field might follow.