The National Broadcasting Company (NBC) has used several corporate logos over its history. The first logo was used in 1942 when the television network launched. Its most famous logo, the peacock, was first used in 1956. It was in use except from 1975 until 1979. The logos were designed by NBC itself. The first logo incorporated design from parent company RCA, and was a unique logo not related to the NBC radio network.

Recent logos have been themed for different holidays during the year, such as Halloween, Valentines Day and New Years Day, celebrating the Olympics on NBC, as well as an American flag themed logo in the wake of the events of September 11. The logo has been adapted for color television and high definition television as technology has advanced. As NBC took over other television channels, the logo branding went to other networks, one example being CNBC and NBC Sports Network. The logo was also incorporated into the parent company of the network, NBC Universal, until Comcast took control of the company in 2011.

The National Broadcasting Company (NBC) is an American commercial broadcasting television network and former radio network headquartered in the GE Building in New York City's Rockefeller Center with additional major offices near Los Angeles and in Chicago. NBC is sometimes referred to as the "Peacock Network," due to its stylized peacock logo, created originally for color broadcasts.

Formed in 1926 by the Radio Corporation of America (RCA), NBC was the first major broadcast network in the United States. In 1986, control of NBC passed to General Electric (GE), with GE's $6.4 billion purchase of RCA. GE had previously owned RCA and NBC until 1930, when it had been forced to sell the company as a result of antitrust charges.

After the 1986 acquisition, the chief executive of NBC was Bob Wright, until he retired, giving his job to Jeff Zucker. The network is currently part of the media company NBCUniversal, which is a joint venture of Comcast and General Electric since 2011 (and before that, jointly owned by GE and current Universal Music Group parent Vivendi). As a result of the merger, Zucker left NBC and was replaced by Comcast executive Steve Burke.

Logos ( /ˈloʊɡɒs/, UK /ˈlɒɡɒs/, or US /ˈloʊɡoʊs/; Greek: λόγος, from λέγω lego "I say") is an important term in philosophy, psychology, rhetoric, and religion. Originally a word meaning "a ground", "a plea", "an opinion", "an expectation", "word," "speech," "account," "reason," it became a technical term in philosophy, beginning with Heraclitus (ca. 535–475 BC), who used the term for a principle of order and knowledge.

Ancient philosophers used the term in different ways. The sophists used the term to mean discourse, and Aristotle applied the term to refer to "reasoned discourse" or "the argument" in the field of rhetoric. The Stoic philosophers identified the term with the divine animating principle pervading the Universe.

After Judaism came under Hellenistic influence, Philo (ca. 20 BC–AD 50) adopted the term into Jewish philosophy. The Gospel of John identifies the Logos, through which all things are made, as divine (theos), and further identifies Jesus as the incarnation of the Logos.