A quantitative, cross sectional survey design was used to conduct a pilot study on 40 parents of children attending Primary school. Snowball sampling technique was used to collect the data. The objective was to see the feasibility of study on larger group and to identify the prevalence of Attention Deficit Hyperactivity Disorder ADHD among primary school children. The tools used to collect data were demographic profile and Vanderbilt parents Rating Scale. The age percentage of 60 of the children was between the ages of 10 - 12 years of age. Gender ratio was almost equally divided into half. The prevalence of ADHD and its subtypes showed that predominantly hyperactive impulsive type had more prevalent symptoms, without scoring four and five in performance. Inattentive type was found without performance disturbance among 10 of primary school children. Anjana Williams | Dr. Balwinder Kaur Buttar | Dr. Rajesh Konnur "Preliminary study report on prevalence of attention deficit hyperactivity disorder among primary school children, in selected community of Dehradun, Uttarakhand" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-2 , February 2018, URL: https://www.ijtsrd.com/papers/ijtsrd9448.pdf