Introduction: this study was carried out to evaluate the effectiveness of transactional analysis training on improving communication apprehension in people with poor communication skills. Method: The method of this research was quasi-experimental with two experimental and control groups and pre- and post-test implementation. The statistical sample was comprised of 28 people with poor communication skills (obtaining score one in standard deviation below the mean score in the communication skills questionnaire). They were selected based on inclusion-exclusion criteria by convenience sampling method. Subjects in both groups in one session responded to all items of communication skills questionnaire and Personal report of communication apprehension before and after training. The data were analyzed using software SPSS-20, ANOVA and MANOVA tests. Results: showed the transactional analysis training reduced communication apprehension but increased communication skills in experimental group compared to the control group (P <0.05). Conclusion: It is concluded that transactional analysis training makes a person familiar with his/her personality system, the relationships with others and improve his/her communication skills. Declaration of Interest: None.