Conduct disorder (CD) is one of the most common forms of childhood psychiatric problems in the community. In this disorder it was found that angry and antisocial behaviour were related to poor executive control. In this study we assess executive functions (EFs) in conduct disordered children. The diagnosis was made according to the ICD-10 research criteria, and then the children were subjected to the Wisconsin Card Sorting Test, and The Porteus Maze Test. We found that CD children had significant poorer performance than controls on the executive functions tests, cases with positive family history of CD had poorer performance than those with negative family history, there was negative significant correlation between the IQ and the performance on the EF tests, and lastly cases with high severity CD showed a statistically significant difference in their performance on the EF tests.