Cancer is the main causes of death in Iraq ,because it comes in a second one causes of death after cardiovascular diseases.The viruses are one of carcinogenesis, So the aim of this study screne different types of cancer and relationship with Hepatitis C virus.400 blood samples were collected divided into two groups: diseased group has 300 samples collected from 10 types from patients with cancer(brain cancer, lung cancer, colon cancer, bone cancer,stomach cancer, thyroid cancer ,uterus cancer, breast cancer, pancreas cancer ,prostate cancer) and tested for Anti HCV Abs by using ( EIA) technique . The results showed that the infections percent was (0%,0%, 85.71%,60%,75%,33.33%,33.33%,20%,16.66%,10%) respectively , control group has 100 blood samples and also tested for Anti HCV Abs , the result was 0.% infection percent . we conclude that HCV may related with colon cancer ,bone cancer rather than other types of cancer in this study.