During the period of 2004 to 2015 54,102 new HIV diagnoses in older adults (50 years and older) were tabulated from 31 European countries. A larger younger group (15-59 years) was collected for comparison. Also, information on age, sex, transmission route and CD4 count was obtained. During the 12-year study period for the entire group the average rate of new HIV diagnoses increased 2.6 per 100,000 in the population. The diagnoses increased significantly among older men, 2.2%, women, 1.3%, men who have sex with men, 5.8%, and injection drug users, 7.4%.