This study focused on "An assessment of the management of students' Welfare services in universities in three Geo-Political Zones in Northern part of Nigeria" The study was specifically interested in finding out the types of welfare services available in the system and the impact they have on the students' behaviour. The inadequate provision of the students, welfare facilities and their management were assumed by the stakeholders and members of the public as factors militating against students' peaceful behavour in the University system. The objectives of the study therefore were to identify the types of students' welfare services and to assess the availability as well as to examine the impact of each welfare service on the students' social and academic behaviour. The critical areas examined were social, academic, medical and environmental services. Twenty (20) hypotheses were postulated to find out the significant differences in the opinions of the three groups of respondents. The researcher reviewed relevant literature to establish the theoretical base for the study. The descriptive and survey methods were adopted for investigations, identification and collection of data. The total population of subjects was two hundred and twenty six thousand nine hundred and forty six (226,946), made up of 206,948 students, 19,448 service staff and 450 top management staff, in the sixteen Universities in the three Geo- Political Zones in Northern part of Nigeria. Through random sampling Technique, five Universities; Ahmadu Bello University Zaria, Bayero University Kano, University of Maiduguri, University of Jos and Usmanu Dan Fodiyo University were selected, being one third of the sixteen Universities, in the three Geo Political Zones in Northern part of Nigeria. Out of the total of one hundred and thirteen thousand two hundred and eight (113208) subjects consisting of 109,774 students 3389 service staff and 45 top management staff in the five sampled Universities, 770 respondents were used. Out of the 770 copies of the questionnaire designed and administered by the researcher, 463 copies were returned. The questionnaire as the basic instrument was vetted by the experts in Educational Administration and Planning and Educational Statistics Sections and subjected to pilot study in Federal College of Education Zaria. The Analysis of Variance (ANOVA) and Scheffe's statistical test were used to test the Null hypotheses. Eight out of twenty hypotheses were retained, while twelve were rejected. The twelve were subjected to Scheffe's test to determine the extent of significant difference in the respondents' opinion. The major finding of the research indicated that the social, academic, medical and environmental students' services were available but not adequate in the Universities. It was also discovered that some services had positive impact on students' behaviour and academic performance. Recommendations such as the need for improved fund allocation to the Universities by the Government were offered for better provision, management and improvement of students' welfare services for peaceful social and academic performance by students in the Universities. A model for effective and efficient management of the students' welfare services was also developed by the researcher. Finally suggestions were also made for further research into the area of students' welfare services in the University system in Nigeria in general.