Attention-deficit/hyperactivity disorder (ADHD) is a common childhood developmental disorder characterized by unsuitable levels of inattention and/or hyperactivity/impulsivity that cause functional deficiency in various surroundings so this study aims to assess the parenting styles and the clinical variables among children with ADHD. It has been carried out using a comparative research design. The subjects were constituted of children with ADHD who attended the child out-patient clinic at Mansoura University Hospitals throughout four months and another matched group (age, gender, residence and free from psychiatric disorder)of 50 children who attended Sherbine Elementary School had been compared to children with ADHD. Data collection was conducted during the period from December 2016 to March 2017. Control parenting style was the most prevalent parenting style that used by parents of ADHD children, followed by Oscillator parenting style, and differential parenting style '' with mean of 34.56, 16.89, and 16.69 respectively, while '' Over protective parenting style, and positive parenting style '' are the least expressed by them with mean of 16.37, and 11.2 respectively. There is a highly statistically significant correlation between parenting styles and the clinical variables among children with ADHD.