Visit those websites to learn more about the next conferences on ADHD organized by those groups:
CADDAC
Center for ADHD Awareness, Canada
CHADD
Children and Adults with Attention-Deficit/Hyperactivity Disorder
APSARD
The American Professionnal Society of ADHD and related Disorders
CADDRA
Canadian ADHD Resource Alliance
EUNETHYDIS International ADHD Conference
World Federation of ADHD Congress