Objective: The article discusses a feasibility study conducted to examine whether Pay Attention!, an intervention training sustained, selective, alternating, and divided attention, could be utilized in a clinical setting with children diagnosed with ADHD, and whether children who received the intervention made attention and executive functioning gains. Method: After a diagnostic and baseline evaluation, 23 school-aged children with ADHD participate in up to 16 sessions of Pay Attention! and the outcomes are evaluated. Results: Results show the intervention is feasible to administer and acceptable to participants. Parents and clinicians rate fewer ADHD symptoms following the intervention and report improvements in executive function. Child performance on neuropsychological tests showed improvements in fluid reasoning and cognitive flexibility and working memory. Conclusion: The findings suggest that a randomized clinical trial of Pay Attention! is warranted to investigate its viability as a treatment for attention and executive functioning deficits in ADHD. (Contains 1 table and 3 figures.)