The objective of the research is to compare the wisdom of pre-service Indonesian counselors based on supervised counseling practice experiences. The research used the ex post facto method. The sample of this research consisted of 489 sixth semester pre-service counselors of 11 guidance and counseling department in Indonesia. The sample was selected using the multistage random sampling technique. Data were collected using Indonesian Counselor's Wisdom Scale whose validity and reliability have been tested. The t-test was used as data analysis technique. The results show that there was a significant difference in the wisdom of the pre-service counselors based on supervised counseling practice experiences in the counselor education and supervision.