电视机（英语：Television）简称电视，属家用电器。而这个词语有不同的内涵和外延。如指将动态的影像和声音转换为电子讯号，并通过不同渠道传输电子讯号，再将电子讯还原为影像和声音的技术，亦是电视讯号传送和接受的技术；和可以接收并还原电子讯号为动态影像和声音的装置，通称电视机；电视亦没有单一发明者。而是由不同国家科学家研究的共同结果。早在十九世纪时，人们就开始研究将影像转变成电子讯号的方法。电视亦是一种社会文化现象与商业活动，特指人群与人之间使用电视作为传播载体进行信息交流、消息传播的一种过程，诸如电视节目的制作、电视讯号的传输、电视讯号的接收和观众对于电视节目内容的评判和反馈等的各个方面。

A television set, also called a television receiver, television, TV set, TV, or telly, is a device that combines a tuner, display, and loudspeakers for the purpose of viewing television. Introduced in the late 1920s in mechanical form, television sets became a popular consumer product after World War II in electronic form, using cathode ray tubes. The addition of color to broadcast television after 1953 further increased the popularity of television sets in the 1960s, and an outdoor antenna became a common feature of suburban homes. The ubiquitous television set became the display device for the first recorded media in the 1970s, such as VHS and later DVD. It was also the display device for the first generation of home computers (e.g., Timex Sinclair 1000) and video game consoles (e.g., Atari) in the 1980s. In the 2010s flat panel television incorporating liquid-crystal displays, especially LED-backlit LCD displays, largely replaced cathode ray tubes and other displays. Modern flat panel TVs are typically capable of high-definition display (720p, 1080i, 1080p) and can also play content from a USB device.