The destruction of facilities in higher institutions by rampaging angry students during crisis has remained a re-occurring decimal and library schools have had their fair share. This study therefore was aimed at establishing the effectiveness of the application of aggression replacement training and cognitive behavioral therapy in the management of anger among student-librarians. The study was guided by two research questions as well as two hypotheses. The study applied the pre-test, post-test control group quasi experimental design. The target population of this study include, all student-librarians in federal universities running library and information science programmes in Nigeria but the sampled population was derived from three of the universities selected by regional location. The participants who were in 3rd year were those who displayed proneness to anger on the anger response scale. The research design contains two treatment-strategies which are ‘Aggression Replacement Training’ (ART) and ‘Cognitive Behavioral Therapy’ (CBT) as well as control group. Through simple randomization the 45 that formed the sampled population were grouped into three. with one group of 15 assigned into Aggression Replacement Training, another 15 to the Cognitive Behavioral Therapy and the last 15 forming the control group. The primary instrument used for data collection, was an anger response scale while the programmers spanned for ten weeks of ten sessions. The data collected in line with the research questions were analyzed using the mean (x) statistics whereas the Analysis of Co-variance (ANCOVA) was used to test the hypothesis. The outcome of the study shows that the application of aggression replacement training and cognitive behavioral therapy are effective tools in managing anger among student-librarians and by extension, all students. The study among others recommended the use of ART and CBT by counseling psychologists and other related professionals in the management of anger among student-librarians.