The purpose of this study was to determine whether group counseling practices have positive effects on the trust patterns among undergraduate counseling trainees by using SNA with PAJEK Package. In addition to SNA, t tests were also performed with MINITAB Package. The participants of this study comprised 45 undergraduate students (the attendee of the course of Group Counseling students) enrolled in Guidance and Psychological Counseling Deparment in Uluda÷ University, Bursa, Turkey. SNA was conducted on three sections (A=16, B=16 and C=13) of these 45 students separately and also for the whole class (A+B+C=45). The same Ph.D. Lecturer teaches in all three sections. The data were collected at the beginning and at the end of the spring semester of the 2009-2010 academic year. As in all SNA studies, a single-item question was asked to all the participants. The question was as follows: “Who do you trust and at what level?” Below the question above, the names of the forty-five participants were written on the survey paper. Participants were asked to rate this question on a five-point scale on the names of participants. This question was asked to participants before starting the group (that is named “Before”) and after ending the group (that is named “After”) process.