The objective of this chapter is to introduce factors affecting communication. Sometimes the message sent by sender does not reach the receiver in the same manner as expected by the sender. This filtration, misrepresentation of communication may cause misunderstanding. Therefore it is important for a manager to identify these barriers and take measures to overcome these. The barriers can be grouped in categories following as semantic barriers, psychological barriers, organizational barriers, and personal barriers. Emotional or psychological factors also act as barriers to effective communication. The state of mind has great influence over the information and its reflection. As a frightened person may not communicate properly similarly an angry person may not receive the communication effectively. Factors related to organizational structure, authority relationship, rules, regulations may act as barriers to effective communication.