Purpose: The purpose of the study is to identify the big data adoption in informationinstitutions as well as to justify the understanding and expertise level of informationprofessionals. The study tried to identify the adoption of big data in the information institutionsof Bangladesh.Materials and Methods: A structured questionnaire was adapted cautiously for conductingthe study. The Questionnaire was sent to more than 50 professionals of information institutionsvia email and FB messenger. The respondents are the professionals and faculty members whohad the minimum qualification of bachelor/master /postgraduate degree in information scienceand library management. Among them, 25 respondents from 20 information institutionsreplied.Result: The study found that most of the information institutions yet to adopt big data properlyin Bangladesh. Twenty percent of institutions adopted big data whereas eighty percent did notadopt it even some of the institutions are not aware of big data. The study found that sixtypercent of professionals are not aware of the monthly amount of data used in their institutions.2The results found that information professionals are, in general, positive in big data adoption.The study also assessed the understanding level of them.Conclusion: The effort has been made to explore the current awareness activities of big dataand its adoption in the information institutions of Bangladesh for the first time that will triggerfurther study on big data