Purpose: The aim of this study is to determine the effect of cognitive behavioral therapy-based psychoeducation provided to individuals diagnosed with schizophrenia on internalized stigma and functional remission.Design and Methods: The study was conducted based on the quasi-experimental design with pretest-posttest control group with 100 individuals, who were diagnosed with schizophrenia, in a Community Mental Health Center between September 2020 and June 2021.Findings: It was determined that after the cognitive behavioral therapy-based psychoeducation, the internalized stigma level decreased and the functional remission level increased in the experimental group compared with the control group.Practice Implications: In the study, it was determined that the experimental and control groups had low levels of functional remission and high levels of internalized stigma before the cognitive behavioral therapy-based psychoeducation, and the functional remission levels increased and the internalized stigma levels decreased in the experimental group compared with the control group after the cognitive behavioral therapy-based psychoeducation.