The Juvenile Crime Monitor provides a broad, multi-method and multi-source overview of juvenile crime developments in the Netherlands from 2000 with an emphasis on 2015 and onward. The Juvenile Crime Monitor uses police data on juvenile suspects, prosecution and court data on convicted offenders and sanctions, and self-report data from a represen tative Dutch juvenile sample. By using multiple sources, examined developments are less selective and biased, than when only a single source is used. Furthermore, several age groups are distinguished: children aged 10 to 11, minors aged 12 to 17, and young adults aged 18 to 22; most data concerns ages 12 and older. Besides traditional crime, cyber-dependent and cyber-enabled crime is examined as well.