Objective - To describe HIV surveillance data among men who have sex with men in the European Union (EU) and the European Free Trade Association (EFTA) for the period 2000–2007. Method - HIV surveillance data were collected by EuroHIV from 24 EU member states, plus Norway and Iceland, from 2000 to 2006, and by the European Centre for Disease Prevention and Control (ECDC) in 2007. These data are analyzed by mode of transmission and presented by country for men who have sex with men. Results - In 2007, 8,682 new HIV diagnoses were reported among men who have sex with men (63 cases per million men aged 15 to 64). From 2000 to 2007, the number of new diagnoses in this population nearly doubled (from 3,401 to 6,657) in the 23 countries that reported data for this period. This increase is greater than in other transmission groups. Conclusion - The growing number of new HIV diagnoses among men who have sex with men underscores the need for surveillance and prevention efforts in this population on a European scale. (R.A.)