This study reports findings on Internet gambling and problem gambling among Icelandic youth. Participants were 1.537 13-18 year-old students, 786 boys and 747 girls. Results revealed that 56.6% had gambled at least once in the past 12 months and 24.3% on the Internet. Gender and developmental differences were found for Internet gambling, as boys and older age-groups were more likely to gamble on the Internet than girls or younger age groups. Problem gambling for the total sample was 2.2%, but Internet gamblers were more likely to be classified as problem gamblers (7.7%) than non-Internet gamblers (1.1%). A comparison of the findings of this study to earlier studies on adolescents conducted in 2003 and 2004 reveals that Icelandic adolescents are gambling less in land-based types of gambling and more on the Internet. In general, the results of this study thus suggest that the gambling habits of Icelandic youth are changing.