This study was designed to explore the perceptions of the leadership behavior of deans of students at 15 universities in the Republic of China (ROC). The study groups included the deans of students, student affairs staff members, and student leaders within the 15 universities. The Leader Behavior Description Questionnaire (LBDQ) was employed to assess the leadership behavior of the deans of students in the dimensions of initiating structure and consideration. The population included 10 current deans of students and 8 former deans of students, 173 student affairs staff members, and 224 student leaders. In addition, six current deans of students and one officer of the Ministry of Education were interviewed by the researcher. The conclusions are as follows. 1. Current and former deans of students had the same perceptions and expectations of the leadership behavior in the initiating structure and consideration dimensions. 2. Effective leadership behavior of deans of students was associated with high scores on initiating structure and consideration. 3. Deans of students employed different leadership behaviors to lead the student affairs staff members and student leaders. 4. The leadership behavior of the deans of students was inclined toward high initiating structure and low consideration. 5. Deans of students and student affairs staff members had differing perceptions of leadership behavior on real consideration. 6. Deans of students and the student leaders had differing perceptions of leadership behavior on real initiating structure. This study suggested that a dean of students may want to employ a plan of self-study, or participate in leadership training programs, workshops, and conferences related to student affairs to improve leadership behavior effectively. Further research to examine the perceptions of the leadership behavior of deans of students is recommended.