There are many ways an antenna is defined. According to Webster's dictionary, it is a metallic device (as a rod or wire) for radiating or receiving radio waves. This paper gives users a brief introduction about antenna types and their application. Types of antenna, wire antenna aperture antenna, microstrup antenna, array antenna, reflector antenna and lens antenna. The characteristics of each type of antenna and antenna application. This paper is not a comprehensive study of antennas, but serves as an introduction to antenna types and their applications.