This volume contains the proceedings of the 8th Workshop on Hybrid S- tems: Computation and Control(HSCC2005)heldinZurich, Switzerlandduring March 9-11, 2005. The annual workshop on hybrid systems attracts researchers from academia and industry interested in modeling, analysis, and implemen- tion of dynamic and reactive systems involving both discrete and continuous - haviors. The previous workshops in the HSCC series were held in Berkeley, USA (1998), Nijmegen, TheNetherlands(1999), Pittsburgh, USA(2000), Rome, Italy (2001), Palo Alto, USA (2002), Prague, Czech Republic (2003), and Philad- phia, USA (2004). This year's HSCC was technically co-sponsored by the I ..