These Proceedings contain the papers presented at the 3rd IFAC International Workshop on Time Delay Systems, Santa Fe, New Mexico, USA, 8 - 10 December 2001. The first workshop in this series took place in Grenoble, France, 1998 and the second workshop was held in Ancona, Italy, 2000. This workshop's scope has expanded to include nonlinear systems. This workshop also contains various "new" applications of delay systems including those of communication...