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Attention‐deficit/hyperactive disorder (ADHD) and autism spectrum disorders (ASD) are two of the most common and vexing neurodevelopmental disorders among children. Although the two disorders share many behavioral and neuropsychological characteristics, most MRI studies examine only one of the disorders at a time. Using graph theory combined with structural and functional connectivity, we examined the large‐scale network organization among three groups of children: a group with ADHD (8–12 years, n = 20), a group with ASD (7–13 years, n = 16), and typically developing controls (TD) (8–12 years, n = 20). We apply the concept of the rich‐club organization, whereby central, highly connected hub regions are also highly connected to themselves. We examine the brain into two different network domains: (1) inside a rich‐club network phenomena and (2) outside a rich‐club network phenomena …