Objective: Growing evidence suggests digital interventions may provide neurocognitive benefits for children with ADHD. This study aimed to investigate the efficacy of a digital attention intervention in children with ADHD. Method: In this double-blind randomized controlled trial 55 children with ADHD (5-9 years) were allocated to the intervention (N=28) or control program (N=27). Both programs were delivered via touchscreen tablets at home 5 days a week for 5 weeks. The primary outcome was change in the Test of Variables of Attention (TOVA) Attention Comparison Score (ACS) from pre- to post-intervention. Results: Participants who received the intervention had significantly greater improvements in the TOVA ACS from pre- to post-intervention than those in the control (p<0.044). No intervention effects were observed on secondary outcomes assessing executive functioning, ADHD symptoms, or functional impairment. Conclusion: Collectively these findings provide insufficient evidence for the implementation of digital attention interventions for children with ADHD.