Abstract: This disclosure relates to method and system for managing Internet of Things (IoT) devices in heterogeneous communication networks. The method includes receiving metadata corresponding to each of a set of IoT devices including a plurality of IoT sensors; validating each of the set of IoT devices based on the received metadata; establishing communication with each of the set of IoT devices through an associated predefined data communication protocol; receiving real-time data from each of the plurality of sensors associated with each of the set of IoT devices through an IoT protocol; monitoring the real-time data received from each of the plurality of sensors at predefined time intervals through a Graphical User Interface (GUI); and managing one or more device parameters corresponding to each of the set of IoT devices in the heterogeneous communication network through the GUI based on the real-time data.