This study investigated assessment of social media utilization and study habits of students of tertiary institutions in Katsina State. The descriptive survey design was adopted for this study. Three hundred and eighty-one (381) students' of tertiary institutions in Katsina State were randomly selected for the study. Researchers'-designed questionnaire titled "Utilization of Social Media Questionnaire" (USMQ) and ''Study Habits Questionnaire" (SHQ) with Cronbach's Alpha reliability coefficients of 0.78 and 0.81 respectively were used to collect data for the study. Analysis of data was carried out using frequency, percentage, mean, t-test, regression and Pearson correlation statistics at 0.05 alpha level. Findings revealed that there is significant influence of students' level of social media utilization on their study habit (R square= 0.078,P<0.05). There is no significant difference in the study habit of male and female students of tertiary institutions in Katsina State (t= -2.206, P>0.05). There is no significant difference in the use of social media by students of tertiary institutions in Katsina State on the basis gender (t=1.042, P>0.05). There is significant positive relationship between students' level of use of social media and study habit (r=+0.280, P<0.05). Based on these findings, it was recommended that regular orientation should be given to students on how to and when to use social media to enhance their study habit and achievement. Also, students of tertiary institutions should be encouraged to improve upon their study habit for better performance in their academic.