The study investigated the efficacy of cognitive behaviour and relaxation techniqueson insomnia among students of Ahmadu Bello University, Zaria, Kaduna State, Nigeria. Five objectives, five research questions and five null hypotheses guided the study.Quasi-experimental design involvingpretest posttest experimental/control group was used. A total sample of thirty-sixstudentsof Ahmadu Bello University, Zaria with amean age of24.5,who were identified withprimary insomnia condition wereused for the study and purposively divided into three groups of twelve each.One group was exposed toCognitive Behaviour Technique for insomniawhich include; stimulus control instruction, sleep restriction, sleep hygiene education, and cognitive technique while the other was exposed toRelaxation Techniquewhich include;deep breathing exercise, progressive muscle relaxation,guided visualization meditation, and mindfulness technique. The thirdgroup was used as a control group. The intervention lasted for a period of six weeks.The instrument used for data collection was Insomnia Severity Index,which wasadministered at pre andpost intervention stages to assess treatment outcome.The Statistical Package for the Social Sciences (SPSS version 24) was used to analyse the data collectedusing the one-way between groups analysis of covariance method.After adjusting for the covariate,findings suggesta significant effect of cognitive behaviour technique in reducing insomnia among students of Ahmadu Bello University, Zaria, Kaduna State, Nigeria,F(1,21) = 22.416, p = .000.Relaxation technique is also efficacious in reducing insomnia among students of Ahmadu Bello University, Zaria, Kaduna State, Nigeria, F(1,21)= 12.630, p =.002. The study also found a significant differential effect of cognitive behaviour technique when compared torelaxation techniquein reducing insomnia among students of Ahmadu Bello University, Zaria, Kaduna State, Nigeria,F(1,21)= 12.206, p =.002, with cognitive behaviour technique producing higher remission rate of about 65.6% compared to 45.6% for relaxation technique.No significant differential effect of cognitive behaviour technique,F(1,9) = .106, p = .752, and relaxation technique, F(1,9)= .369, p = .559,in reducing insomnia of male compared to female students of Ahmadu Bello University, Zaria, Kaduna State, Nigeria was found.Based on the findings of the study, it was recommended thatschool psychologists and counsellors should be encouraged to use cognitive behaviour and relaxation technique asa more viable interventionto re-address insomnia condition among students of Ahmadu Bello University, Zaria, Kaduna State, Nigeria.