Aim: This study was conducted to investigate whether multivitamin intake can be one of the reasons of childhood obesity. Material and Method: : We carried out a prospective case-control study. The first group included 50 children, as case group who was diagnosed with obesity according to body mass index (BMI) and the second group 50 healty children as control group. Premature babies, children with mental motor reterdation and chronic illness, syndromic children and mothers who couldn't answer the questions efficiently were excluded. The study was conducted with a questionnaire that was filled out by mothers. Anthropometric measurements including body weight and height were measured by the same researcher (NK). Results: The mean age of the case group was 10,34 +/- 3,68 years and 8,88 +/- 3,96 years in control group. There were no statistically significant difference between two groups in terms of multivitamin intake during pregnancy so multivitamin intake was not found related with childhood obesity, mode of delivery, gestational age at delivery and birth weight as well. Discussion: In our study; multivitamin supplements had no effect on childhood obesity. Further studies are needed with larger populations to asses it detailed.