Disclosed are various examples for categorization using an organizational hierarchy. In one example, a management service obtains user identifiers for users associated with an enterprise. The management service sends a request for subordinate data for each user to a directory service. The management service generates a hierarchy that links the users based on the subordinate data. The management service generates a map using the hierarchy. The map includes a user identifier and a level for each user. The management service sends the map to a client device.