Nickelodeon (often shortened to Nick) is an American broadcast television network which was first tested locally on December 1, 1977, before it nationally launched on April 1, 1979 as the first broadcast network for children. It is owned by ViacomCBS (formerly WarnerMedia until 1986) through its Nickelodeon Networks division and is based in New York City. The network's programming is primarily aimed at children and adolescents aged 7-12, while some of its program blocks target a broader family audience.
Before Nickelodeon's official launch in 1979, Warner Cable (under its two-way interactive cable television system, QUBE) launched a specialized channel called C-3 in 1977, which would later evolve into Nickelodeon. It was only broadcast locally in Columbus, Ohio. The C-3 channel aired episodes of Pinwheel on a loop; when Nickelodeon launched in 1979, Pinwheel became its first flagship show.
Nickelodeon was launched on April 1, 1979. The name was derived from a type of movie theater which charged five cents (one nickel) for admission. This theatre concept was represented in their first logo and on-air package, which actually depicts a man looking into a kinetoscope within the letter "N" of the Nickelodeon word mark.
In 1980, Nickelodeon slightly updated their logo. Their identification logos at the time featured a mime doing things on a black background with an instrumental cover of the song "Put That Little Nickel In" as background music. The font may be the same as Pinwheel's logo and slightly modified.
Bob Klein (silver ball)
A new logo designed by Lou Dorfsman was introduced in 1981. It consists of the network's name spelled in rainbow letters set in the Frankfurter font, with a pinball illustrated by Bob Klein placed behind it. The pinball theme was used in the network's IDs during the period, including one that used early 1980s-era computer graphics. The font for this logo is now used as fonts for Nick Jr. bumpers since 2012.
1984–2009, 2016-Present (Nick Box Collection), 2018-2020 (VRV)
Corey McPherson Nash
Balloon Extra Bold
On October 1, 1984, Nickelodeon began utilizing a new theme with their multitude of logos: orange silhouettes with the network's name written in the Balloon Extra Bold font on them. Eventually, during the early 1990s, the "splat" design would become the most used, representing the slime Nickelodeon has been known for since it began broadcasting the Canadian series You Can't Do That on Television in 1981; Nickelodeon would later adopt the trademark as part of its own programming. Designed by Fred/Alan, Inc., originally with just a star in mind, it has grown to be the most well-known and recognized Nickelodeon logo. The wordmark was rarely, if ever, seen isolated from a shape of some kind. Even though this logo was replaced by the current one in 2009, in 2016 the logo made a brief return for the Nickelodeon Nick Box Collection, the logo can be seen on both the tags and on the print of the box, so far the logo has been seen on every version of the Collection. in 2018 the logo also returned for the NickSplat channel on VRV, until it shut down in 2020. 
Trollbäck & Company (2009-2011)
A new logo and on-air look for Nickelodeon were unveiled in January 2009, and officially began use in the United States on September 28, 2009 (though two days earlier, the logo was accidently used on the channel alongside the previous logo). The design is credited to Eric Zim, and the on-air brand identity was produced at Trollbäck & Company. On the same day as the new logo's introduction, Nickelodeon's digital networks Noggin and The N were merged by channels named after popular Nickelodeon programming blocks (Nick Jr. and TeenNick, respectively). The new Nick Jr. and TeenNick channels, as well as Nicktoons Network (which reverted back to its older name, Nicktoons), had logos based on the style of the main channel's. They would also be in a different color (but leaving "Nick" orange), with most channels being based off the color of the previous logo (e.g. "Jr. being blue like is past logo). The typeface used in this logo is a custom font which resembles Bauhaus (unofficially named Litebulb) and retains its trademark orange color from the splat. This logo was placed 3rd in Part 2 (the best) of the 2010 Brand New Awards. In April 2011, Nickelodeon unveiled new variations of the background that interact with the logo's color.
The new Nickelodeon logo was rolled out internationally during 2010 accordingly:
- January 29: France
- February 15: United Kingdom/Ireland
- March 1: Poland 
- March 26: Australia/New Zealand
- March 31: Germany/Austria/Switzerland 
- April 1: Italy
- April 5: Latin America/Brazil/Caribbean
- June 25: India 
Television networks in the United States
"The Big Three": CBS | NBC | ABC
A&E | Altitude Sports | AMC | Arizona NewsChannel | Aspire | AT&T SportsNet (Pittsburgh • Rocky Mountain • Southwest • Root Sports Northwest) | Audience Network | AWE | AXS TV | BabyFirstTV | BabyTV | Bandamax | BBC America | BET (BET Gospel • BET Her • BET Hip-Hop • BET Jams • BET Soul) | BeIN Sports (en Español) | Big Ten Network | Black News Channel | The Blaze TV | Bloomberg Television (HD) | Bravo | BYUtv | C-SPAN (2 • 3) | Caracol Internacional | Cartoon Network (HD • Adult Swim • Boomerang) | CBeebies | CBS Sports Network | Cinelatino | Cinemax (5StarMax • ActionMax • Cinemáx • MoreMax • MovieMax • OuterMax • ThrillerMax) | Cleo TV | CMT (Pure Country) | CNBC (World) | CNN (Español • Airport • International) | Comedy Central | Cooking Channel | The Cowboy Channel | Cox Sports Television | Crime & Investigation Network | De Película (Clásico) | DirecTV Cinema | Discovery Channel (American Heroes Channel • Animal Planet • Destination America • Español • Family • Familia • Life • OWN • Science • TLC • Velocity) | Dish Network PPV | Disney Channel (Disney Junior • Disney XD) | DIY Network | DOGTV | E! | El Rey | Epix (2 • Drive-In • Hits) | ESPN (Classic • College Extra | Deportes • PPV • ESPN2 • ESPNews • ESPNU) | EWTN | Exercise TV | Fashion TV (HD • HD 3D) | Fearnet | Flix | FM | Food Network | FOROtv | Fox Business Network | Fox College Sports | Fox Life | Fox News Channel (HD) | Fox Soccer Plus | Fox Sports (1 • 2 • Fox Deportes) | Fox Sports Networks (HD • Arizona • Detroit • Florida/Sun • Indiana • Kansas City • Midwest • North • Ohio/SportsTime Ohio • South/Southeast/Carolinas/Tennessee • Southwest/Oklahoma/New Orleans • West/Prime Ticket • San Diego • Wisconsin • YES Network) | Free Speech TV | Freeform | Fuse | Fusion | FX (FXM • FXX) | FYI | G4 | Galavisión | Game Show Network | Globo Internacional | God TV | GOL TV | Golf Channel | Great American Country | GSN | Hallmark Channel (Drama • Movies & Mysteries) | HBO (2 • Comedy • Family • Latino • Signature • Zone) | HDNet Movies | Here TV | HGTV | History (en Español • Military History) | HLN | Hope Channel | HSN (HSN2) | i24 News | Idaho's Very Own 24/7 | IFC | In Demand | INSP | Jewelry Television | Lifetime (Movies • Real Women) | Logo | Longhorn Network | Marquee Sports Network | MAVTV | The Movie Channel (Xtra) | MGM HD | MASN | Movieplex (Indieplex • Retroplex) | MLB Extra Innings | MLB Network | MLS Direct Kick | Motor Trend | MSG (Plus • Varsity • Western New York) | MTV (MTV2 • Classic • Live • MTVU • Tres) | Music Choice | NASA Television | National Geographic (Nat Geo Wild) | NBA League Pass | NBA TV | NBCSN | NBC Sports Regional Networks (Bay Area • Boston • California • Chicago • Northwest • Philadelphia • Washington • SNY) | NECN | NESN | News 12 Networks (The Bronx • Brooklyn • Connecticut • Hudson Valley • Long Island • New Jersey • Westchester) | Newsmax TV | NFL Network (RedZone) | NFL Sunday Ticket | NHL Center Ice | NHL Network | Nickelodeon (2 • HD • Nick Jr. • NickMusic • Nicktoons • TeenNick • Nick at Nite) | Olympic Channel | One America News Network | OnTV4U | Outdoor Channel | Ovation | Oxygen | Pac-12 Network | Paramount Network | PCNC | Playboy TV | Pop | QVC (2 • BeautyiQ) | Reelz | Revolt | RFD-TV | SEC Network | Shop LC | Showtime (2 • Showcase • Beyond • Extreme • Family Zone • Next • Women) | ShopHQ | Smithsonian Channel | Sonlife | Sony Movie Channel | Spectrum News (Austin • Bay News 9 [Tampa Bay] • Buffalo • Capital Region • Central New York • News 13 [Orlando] • North Carolina • NY1/Noticias • Rochester • San Antonio) | Spectrum Sports (Carolinas • Florida • Kansas City • New York • Ohio • Wisconsin • Texas • SportsNet/SportsNet LA [Los Angeles]) | Sportsman Channel | Starz (Edge • inBlack • Comedy • Cinema • Kids & Family) | Starz Encore (Action • Black • Classic • Español • Family • Suspense • Westerns) | Sundance TV | Syfy | TBS | TCM | Tennis Channel | TNT | Toku | Travel Channel | TruTV | TVG (2) | TV Land | Tres | Universal Kids | Up | USA Network | Vice | V-me | VH1 | WAPA America | We TV | The Weather Channel (Local Now • Weatherscan) | WeatherNation | WGN America | WJLA 24/7 News | The Word Network | World Fishing Network | Yahoo! Finance | YES Network
3net | ABC News Now | All News Channel | American Independent Network | American Sports Network | America One | America's Store | ARTS | AZN Television | Bohemia Visual Music | The Box | Channel America | Chiller | CLTV | CNNfn | CNN Sports Illustrated | Current TV/Al Jazeera America | Cloo | Disney Family Movies | DoD News Channel | DuMont Television Network | ESPN 3D | Esquire Network | FamilyNet | Fearnet | FiOS1 | Fox Soccer | Fuel TV (HD) | Funimation Channel | Gems TV | Gun TV | Hughes Television Network | Hispanic Television Network | Home Theater Network | Inmigrante TV | LAT TV | Light TV | Live Well | The Local AccuWeather Channel | Mizlou Television Network | MHz WorldView | MundoMax | NBC Wx+/NBC+ | NET | Network One | Newsworld International | Nickelodeon GaS | Northwest Cable News | Overmeyer/United | Paramount | PBJ | Pivot | Plum TV | PTEN | Research Channel | Request TV | Retro Jams | Satellite News Channel | Shop at Home Network | Soapnet | Soi TV | Spectrum Deportes | Speed | Starz! Family | TheCoolTV | The WB | The Tube | The Works | TouchVision | Tuff TV | TuVisión | Universal Sports | Deportes 2 | UPN | UATV | VasalloVision | VTV | WSTV