Where are there studies, thoughts on men, men, gender relationships seen from the side and/or from men? What were the contributions of the various male, gay and anti-sexist groups who, after the feminist interpellation, interviewed more or less directly male identity, gender inequality, gender relations? What about gender? Male in social sex relations? These were some of the questions that were asked to the researchers invited to write in a male issue of the BIEF (Information Bulletin on Women’s Studies). BIEF is a feminist journal, published by the Centre for Women’s Studies at the University of Provence since 1975. Convain of the need for a mixed debate on gender ratios, i.e. on gender social relations, those responsible for the review and those of the CREA (Centre for Research and Anthropological Studies) of the University of Lumière-Lyon 2 have joined forces to publish this book. The articles reflect the diversity of men’s research on men today. Sociologists, philosophers, anthropologists and psychologists from France, Quebec and Germany describe particular segments where male identity is structured: church, army, pornography, homosexuality, violence, physician-assisted paternity; others wonder about the male gender and the categories to think about it.