This study was determined to investigate the influence of Classroom management strategies and pupil’s disruptive behaviour in Calabar Municipal, Cross River State, Nigeria. The sample for the study consisted of two hundred and forty (240) pupils who were randomly selected from primary five classes in all the fifteen (15) schools in the study area. The research adopted ex-post facto research design; data were collected using Pupils’ Classroom Management strategies and Disruptive Behaviour Questionaire. To guide the study, three research questions were raised and three research hypotheses proposed and tested at 0.05 levels of significance using Independent t-test and Pearson Product Moment Correlation Co-efficient analysis. From the analyzed data, results indicated that there was significant relationship in all the three variables of the classroom management in schools. In view of the findings above, it was revealed that poor or lack of classroom management can affect or bring about disruptive behaviour among pupils in school. It was recommended among others that effective management styles and positive supportive discipline climate should be encourage in school to in order to help pupils overcome the problem of disruptive behaviours in school.