Results indicated that participants who received the Social Skills Training (SST) intervention and participants who received the Problem-Solving Skills Training (PST) intervention exhibited significant improvement in their interpersonal relationships compared to a control group that received no intervention. Findings further revealed that the participants who received the SST intervention scored significantly better in their interpersonal relationship indicators than their counterparts who received the PST intervention. Overall, the findings suggest that both SST and PST can be used to significantly improve the interpersonal relationships of police officers. The research design involved a pre-test-post-test experimental control group design. Participants were 90 police officers who were purposively and randomly drawn from the Police Command in Osogbo, Nigeria. Participants were equally divided and assigned to one of three groups: the SST intervention group, the PST intervention group, and the control group with no intervention. Interventions were 8 weeks. Participants completed the Police Interpersonal Self-Image Scale, which measures self-image and interpersonal relationships, both before the interventions and following the completion of the interventions. Data analysis involved the use of analysis of covariance and Student t-tests. Limitations of the study are discussed and included its small sample size. Tables, references