DSM V has removed OCD from Anxiety disorder group and classified the disorders with similar clinical picture together under obsessive compulsive and related disorders (OCRD). The following disorders fall under this group. Obsessive compulsive disorder, Body dysmorphic disorder, Hoarding disorder, Trichotillomania, excoriation disorder, substance/ medication induced obsessive compulsive and related disorders. This study aims to assess sociodemographic factors, sex-specific occurrence of OCRD and psychiatric and neurodevelopmental comorbidities of OCRD in children attending a child guidance clinic of R.G Kar Medical college, Kolkata. The study has been done based on the register used to record the patient related data in the child guidance clinic. All cases aged up to 12 years of age, of both sexes, registered with any diagnosis under obsessive compulsive and related disorders from July, 2009 to June 2015 (6 years) were included in the study. Results and statistical analysis were done using SPSS 23. Total 684 cases attended the clinic. Of them number of children diagnosed with obsessive compulsive and related disorders was 48 (7.02%). Most patients were in the age group 8 – 12 years. In all age groups males were more in number than females. Among males most common disorder among Obsessive compulsive and related disorder was Tic Disorder (TD) and among female most common disorder was OCD (44.4%) and next was OCD with Tic disorder (33.3%). Most common comorbidity was Attention deficit hyperactivity disorder