Donald Towsley (1949 - ) is an American computer scientist, currently Distinguished University Professor in the Department of Computer Science at the University of Massachusetts Amherst, where he co-directs the Networking Research Laboratory. He received his B.A. degree in physics and his Ph.D. degree in computer science, both from the University of Texas. Professor Towsley has been a Visiting Scientist at AT&T Labs - Research, IBM Research, INRIA, Microsoft Research Cambridge, and the University of Paris 6.
His research interests include network measurement, modeling, and analysis. Dr. Towsley currently serves as Editor-in-Chief of the IEEE/ACM Transactions on Networking and on the editorial boards of Journal of the ACM and IEEE Journal of Selected Areas in Communications. He is currently the Chair of the IFIP Working Group 7.3 on computer performance measurement, modeling, and analysis. He has also served on numerous editorial boards including those of IEEE Transactions on Communications and Performance Evaluation. He has been active in the program committees for numerous conferences including IEEE Infocom, ACM SIGCOMM, ACM SIGMETRICS, and IFIP Performance conferences for many years, and has served as Technical Program Co-Chair for ACM SIGMETRICS and Performance conferences. He has received the 2007 IEEE Keji Kobayashi Computer and Communications Award , the 2007 ACM SIGMETRICS Achievement Award, the 1999 IEEE Communications Society William Bennett Award, and several conference /workshop best paper awards. He is also the recipient of the University of Massachusetts Chancellor's Medal and the Outstanding Research Award from the College of Natural Science and Mathematics at the University of Massachusetts. He is one of the founders of the Computer Performance Foundation. He has twice been the recipient of IBM Faculty Fellowship Awards and is a Fellow of the IEEE and the ACM.  Towsley is also notable for having a high h-index: 65.