CB and variants may refer to:
CBS (an initialism of the network's former name, the Columbia Broadcasting System) is an American English language commercial broadcast television and radio network that is a flagship property of CBS Corporation.
Chemical, biological, radiological and nuclear defense (CBRN defense or CBRNE defense) is protective measures taken in situations in which chemical, biological, radiological or nuclear warfare (including terrorism) hazards may be present.
CBC Television (also known as CBC TV) is a Canadian English language broadcast television network that is owned by the Canadian Broadcasting Corporation, the national public broadcaster.
CBeebies is a British free-to-air television channel owned and operated by the British Broadcasting Corporation (BBC).
CBC News is the division of the Canadian Broadcasting Corporation responsible for the news gathering and production of news programs on the corporation's English-language operations, namely CBC Television, CBC Radio, CBC News Network, and CBC.ca.
CBS News is the news division of American television and radio service CBS. The president of CBS News is David Rhodes.