This study focuses on the internal communication strategies adopted by organization whichincrease performance of the organization. Most organization, be they public or private,understand the importance of strategic communication with customers and/or stakeholders.Hence there are marketing and communication specialists to produce communication plans forexternal use. Data were collected from managers from different companies, thus this studyconfirmed a strong positive relation between internal communication strategy andorganizational performance using multivariate correlation analysis.This research topic showed an encouraging evidence of reliability and validity. The study foundout that effective business communication is emphasized to a reasonable extent in the surveyedNigerian companies, it was also found that the extent of practices of effective businesscommunication were related to the category of business (service and manufacturing) and its size.