The articles published here were all presented at the international conference on the measurement of discriminations held at the University of Evry Val d'Essonne on 13 and 14 December 2007, under the auspices of the TEPP research federation (FR n° 3126 of the CNRS). Over these two days, about sixty participants discussed the problems of defining and measuring discrimination, including work on economics, sociology and law; on discriminations in hiring, training, unemployment, promotion, career evolution, wages, housing and the access to collective goods (school, etc.); and discrimination based on gender, age, nationality, race, handicap or location.