This study aimed to discover the levels of family communication patterns and criminal behavior and elucidate their relationship in Jordan. This study adopted the descriptive correlational approach. The sample consisted of 189 juvenile delinquents in reform and rehabilitation centers in Jordan. To achieve the objectives of the study, measures of family communication patterns and criminal behavior were developed and applied after confirming the validity and reliability of the tools. Means, standard deviations, and Pearson correlation were used to analyze data. The results related to family communication patterns showed that the reproach and dispersed patterns were highly prevalent. The appeasement and verbal behavior patterns were moderately prevalent, and the nonverbal and ideal patterns scored were least common. The results also indicated that the level of criminal behavior among juvenile delinquents in Jordan was high. There was a direct relationship between criminal behavior and two types of communication (dispersed and reproachful) and an inverse relationship between criminal behavior and the other patterns (verbal, non-verbal, appeasement and ideal communication). The study concluded with several recommendations. The most important of these are conducting qualitative studies to identify the causes of criminal behavior and implementing treatment programs to reduce these behaviors.