Key Takeaways: Nearly one-third of surveyed adults with type 1 diabetes (T1D) screened positive for attention-deficit/hyperactivity disorder (ADHD) symptoms, far exceeding documented diagnosis rates. Positive ADHD screening was associated with more than double the odds of poor glycemic control (HbA1c ≥8.0%) and higher depression scores. No significant associations were observed between ADHD symptoms and most cardiometabolic comorbidities after statistical correction.