This study aimed to determine the effectiveness of organizational communication at PT Rajawali Nusindo Medan. Data collection was done by conducting field research and distributing questionnaires to PT Rajawali Nusindo Medan emloyees. The sample consisted of 55 employees. The results of the study were based on 5 indicators, namely communication climate, information dissemination, information load, the permanence of messages, and organizational culture. The most effective indicators of organizational communication were climate, which had the highest average score with 11.8%, and the permanence of messages, with a score of 11.7%. Organizational culture was not very effective, with a score of only 11.2%.
Keywords: Communication, Communication Organization, Effectiveness