<strong>Objective</strong>: Left ventricular hypertrophy (LVH) accounts for one of the most important independent risk factors for cardiac diseases. In the present study, we investigate the relationship of DNA repair gene polymorphisms and LVH. <br> <strong>Material and Method</strong>: DNA samples isolated from peripheral blood were genotyped with real-time polymerase chain reaction (RT-PCR) for RRM1 (rs12806698), RRM2 (rs6859180) and ERCC2 (rs13181) genes. <br> <strong>Results</strong>: Although there were no significant differences for RRM2 (p=0.365) and ERCC2 (p=0.740) genes. RRM1 (A>C) CC genotype was significantly higher in the LVH than control groups (p=0.018). RRM1gene wild type A allele carriers were significantly higher in the healthy controls than the LVH group (p=0.029). <br> <strong>Conclusion</strong>: RRM1 gene CC genotype could be a risk factor, whereas the RRM1 gene AC genotype and the A allele might play a protective role against LVH.