W. Paul, High Pressure in Semiconductor Physics: A Historical Overview. N.E. Christensen, Electronic Structure Calculations for Semiconductors under Pressure. R.J. Nelmes and M.I. McMahon, Structural Transitions in the III-V and II-VI and group-IV Semiconductors Under Pressure. A.R. Goni and K. Syassen, Optical Properties of Semiconductors Under Pressure. P. Trautman, M. Baj, and J.M. Baranowski, Defects: Hydrostatic Pressure and Uniaxial Stress in Investigations of the EL2 Defect in GaAs. M.-f. Li and P.Y. Yu, High Pressure Study of DX enters Using Capacitance Techniques. T. Suski, Spatial Correlations of Impurity Charges in Doped Semiconductors. N. Kuroda, Pressure Effects on the Electronic Properties of Diluted Magnetic Semiconductors. Chapter References. Subject Index.