What Is a Sitcom? Meaning, History and How Sitcoms Are Made

Quick answer to what is a sitcom: a sitcom, short for “situation comedy,” is a comedy series built around a recurring cast in a shared setting, such as a home or workplace. Episodes usually run about half an hour, and each story is resolved by the end. The genre began on radio before moving to television.

What is a sitcom, exactly, and why has the format lasted 80 years on television? The word gets used for everything from a 1950s studio comedy filmed in front of bleachers to a modern streaming satire shot like a movie. This explainer covers what the term means, where it came from, the first sitcoms on radio and TV, how multi-camera and single-camera shows are made, and what happened to the laugh track.

What is a sitcom? The definition

Merriam-Webster defines a sitcom as “a television series that involves a continuing cast of characters in a succession of comedic circumstances.” The word is a shortening of situation comedy, and the dictionary gives 1956 as its first known use. Cambridge’s definition is simpler: “a television series in which the same characters are involved in amusing situations in each show.”

Encyclopaedia Britannica adds the details most viewers would recognize. It describes a radio or television comedy series with a continuing cast, whose characters are often very different types thrown together in a shared environment, such as an apartment building or a workplace. According to Britannica, sitcoms are typically half an hour long, are either taped in front of a studio audience or use canned applause, and rely on verbal sparring and conflicts that are resolved quickly.

The Library of Congress, which catalogs film and television by genre, records a definition from its moving-image genre guide that explains why sitcoms feel so familiar. Whatever happens in a given episode, “the characters remain in the same relationships and position as they were before,” and “much of the humor derives from this predictability.” The same guide notes that most situation comedies are set in the home or the workplace.

What is a sitcom made of? The building blocks

Put those definitions together and a clear checklist emerges. Most sitcoms share these traits:

• A recurring cast. The same core characters return every episode, in what the Library of Congress calls the same setting and circumstances “in episode after episode.”
• A fixed “situation.” A home, an office, a bar, an apartment. In a 2021 guide to the format, the Writers Guild Foundation notes that most multi-camera sitcoms rely on one or two central locations, often homes or workplaces, where new situations are likely to arise.
• A self-contained story. The Writers Guild Foundation describes the classic shape as characters getting into trouble in the first act and struggling to get out of it in the second.
• A reset. By the end, relationships are back where they started, which the Library of Congress guide identifies as a source of the humor.
• A short running time. Britannica and the Library of Congress both describe the half-hour as the normal length.
• Audience laughter, real or recorded. Britannica lists a studio audience or canned applause as typical, although many modern sitcoms use neither.

A short history of the sitcom, from radio to TV

The sitcom did not start on television. The Museum of Broadcast Communications calls the radio series Amos ’n’ Andy the “fountainhead of both the situation comedy and the soap opera.” It is also a contested landmark: the museum notes that its white creators voiced Black characters, which is now considered unacceptable, and that the later television version drew a formal protest from the NAACP. The timeline below traces the key steps.

1. January 12, 1926: Freeman Gosden and Charles Correll launch Sam ’n’ Henry on Chicago station WGN, which the Museum of Broadcast Communications describes as the first nightly serial program on American radio.
2. 1928: After leaving WGN in December 1927, the pair relaunch their act on Chicago’s WMAQ as Amos ’n’ Andy, a nightly serial that runs until February 1943.
3. Fall 1943: Amos ’n’ Andy returns as a weekly half-hour situation comedy with a studio audience and a team of writers. It runs on radio for 12 years.
4. November 29, 1946: BBC Television airs the first episode of Pinwright’s Progress, starring James Hayter as the owner of “the smallest multiple store in the world.” Guinness World Records lists it as the first television sitcom. According to the BBC, only still photos of the series survive.
5. November 18, 1947: Mary Kay and Johnny debuts on the DuMont network, starring the real-life married couple Mary Kay and Johnny Stearns. The Television Academy calls it American network TV’s first sitcom.
6. 1950: CBS sound engineer Charley Douglass’s recorded laugh track debuts on The Hank McCune Show, according to BBC Culture.
7. October 1951: I Love Lucy debuts on CBS, filmed with three cameras in front of a live studio audience, the setup that would define the studio sitcom.

Mary Kay and Johnny also shows how closely early sitcoms mirrored their stars’ lives. When Mary Kay Stearns became pregnant, the real pregnancy was written into the show, and the Television Academy’s archive notes that the couple’s newborn son appeared on the program when he was just 10 days old.

How I Love Lucy shaped the multi-camera sitcom

Early TV comedy faced a trade-off. A 1991 Los Angeles Times report explains that live shows were rebroadcast from kinescopes, poor-quality recordings made by pointing a film camera at a TV camera’s electronic viewfinder. Filming on 35mm solved the quality problem, but, according to the Television Academy’s Interviews archive, shooting on film generally meant one camera on a closed soundstage. Desi Arnaz and Lucille Ball wanted film quality and the spontaneity of Ball’s rapport with a live audience.

Arnaz recruited the cinematographer Karl Freund, who had won an Academy Award in 1937 for The Good Earth. Freund developed a system for lighting the set from above, since the lighting could not be changed during a live performance, and the show ran three film cameras at once in front of the studio audience. In a paper for the Society of Motion Picture and Television Engineers, published in January 1953, Freund explained that the middle camera usually covered the wide shot while the two side cameras took close-ups. He also described an audience of about 300 people watching from bleachers.

Arnaz is often credited with inventing the method, but historians disagree. The Hagley Museum and Library says historians credit Jerry Fairbanks, who ran NBC’s early film department, with multi-camera TV production from 1947. The Los Angeles Times report adds that I Love Lucy’s associate producer, Al Simon, had set up a similar system for Truth or Consequences in September 1950, and that Simon and Freund are better credited with improving the method than inventing it. What is not in dispute is the influence: the Television Academy says the technique was not generally used outside Desilu until the 1970s but is now widely used across the industry.

Multi-camera vs. single-camera sitcoms

Today, sitcoms fall into two production styles, and the difference is less about camera count than about the audience.

• Multi-camera. The Writers Guild Foundation describes a multi-cam as a sitcom captured, usually over one evening, in front of a live audience “like a play” using several cameras. The scripts are lean, with dialogue double-spaced, so they run about twice as long on the page as single-camera scripts.
• Single-camera. Made without a live studio audience. The same guide points out that single-camera sitcoms can use more than one camera at a time; it is the live audience that makes a show “multi-cam.”

The industry still treats the two styles as distinct crafts. As of October 2026, the Television Academy’s Emmy rules recognize multi-camera and single-camera shows as separate genres in several half-hour craft categories, including cinematography. The same rules define a half-hour episode as running more than 20 minutes and up to 40 minutes, and require a comedy series to have at least six episodes that are primarily comedic.

The balance has shifted toward single-camera comedy. Writing in 2021, the Writers Guild Foundation described multi-cam sitcoms as “a rare sighting on TV today,” while noting that they account for some of the most popular shows in American television history. The most recent Outstanding Comedy Series winner at the Emmys, as of October 2026, was The Studio in 2025, according to the Television Academy.

The laugh track: rise and decline

Few things are as closely tied to the sitcom as recorded laughter. BBC Culture traces it to Charley Douglass, a CBS sound engineer who disliked how studio audiences laughed at the wrong moments, or too loudly, or for too long. He built a machine full of taped laughs that debuted in 1950 on The Hank McCune Show and evolved into the industry standard. BBC Culture adds that even shows with live audiences came to rely on it once editing videotape left noticeable gaps in the real laughter.

The laugh track was controversial from the start. BBC Culture quotes the actor David Niven, in a 1955 interview, calling it “the single greatest affront to public intelligence I know of.” Networks kept it anyway. When the network tested Hogan’s Heroes, a 1965 single-camera CBS comedy, in versions with and without canned laughter, test audiences reacted better to the one with it. Larry Gelbart, co-creator of M*A*S*H, wanted his show to air without laughs; CBS executives insisted on a track, though the producers could skip it during medical scenes.

The shift came in the 2000s. According to BBC Culture, dark British comedies of the early 2000s such as The Office relied “more on cringes than belly laughs,” and US shows followed: 30 Rock, Arrested Development, Curb Your Enthusiasm and the American Office all aired without laugh tracks. By 2016, BBC Culture reported, none of the seven Emmy nominees for Outstanding Comedy Series used one.

How we approach this

This article explains a TV genre; it does not review shows or report on the private lives of anyone named. Dates and figures come from dictionaries, broadcasters, archives and industry bodies, and where historians disagree, as with who invented the multi-camera method, we say so. Read our editorial standards to see how CelebRelay sources and corrects stories, or learn more about CelebRelay. For more on how TV series are run behind the scenes, see our explainer on what a showrunner does, and browse more film and TV explainers in Screen.

Sitcom FAQ

What does sitcom stand for?

Sitcom is short for “situation comedy.” Merriam-Webster gives 1956 as the first known use of the shortened word. The “situation” is the fixed setup, such as a family home or a workplace, that keeps generating new comic problems for the same group of characters.

What was the first sitcom?

Guinness World Records lists the BBC’s Pinwright’s Progress, first broadcast on November 29, 1946, as the first television sitcom. In the US, the Television Academy calls Mary Kay and Johnny, which debuted on DuMont in 1947, American network TV’s first sitcom. The format itself began on radio.

How long is a sitcom episode?

Most sitcoms run about half an hour, including commercials on broadcast TV. As of October 2026, the Television Academy’s Emmy rules define a half-hour episode as running more than 20 minutes and up to 40 minutes.

What is the difference between a multi-camera and a single-camera sitcom?

A multi-camera sitcom is usually filmed in one evening in front of a live studio audience, like a play. A single-camera sitcom is made without a live audience. The Writers Guild Foundation notes that the live audience, not the number of cameras, is the real difference.

Do sitcoms still use laugh tracks?

Some do, but far fewer than before. BBC Culture reported that many comedies dropped laugh tracks in the 2000s, and none of the seven 2016 Emmy nominees for Outstanding Comedy Series used one. Multi-camera shows filmed before a studio audience still feature real laughter.

Sources

• Merriam-Webster, “sitcom” (dictionary entry).
• Cambridge Dictionary, “sitcom” (dictionary entry).
• Encyclopaedia Britannica, “Situation comedy” (revised and updated by Amy Tikkanen).
• Library of Congress, “Situation comedies” (subject heading, citing the Moving Image Genre-Form Guide).
• Museum of Broadcast Communications, “Amos ’n’ Andy” (Encyclopedia of Radio).
• BBC Genome, Pinwright’s Progress, BBC Television, November 29, 1946 (Radio Times listing).
• Guinness World Records, “First television sitcom”.
• BBC News, report on the history of the British sitcom.
• Television Academy Interviews, “Mary Kay and Johnny: American network TV’s first sitcom celebrates its 60th anniversary”.
• Television Academy Interviews, I Love Lucy (from the Museum of Broadcast Communications Encyclopedia of Television).
• Freund, K. (1953). “Shooting Live Television Shows on Film”. Journal of the SMPTE, 60(1), 9–19.
• Los Angeles Times, Jon Krampner, “Myths and Mysteries Surround Pioneering of 3-Camera TV” (July 29, 1991).
• Hagley Museum and Library, “Innovation at Cinecraft: Multi-camera production for television”.
• Writers Guild Foundation, Lauren O’Connor, “TV Format Fundamentals: Multi-Cam Sitcoms” (October 2021).
• BBC Culture, Jennifer Keishin Armstrong, “Where does canned laughter come from – and where did it go?” (September 26, 2016).
• Television Academy, 2026 Primetime Emmy Awards rules and procedures (PDF).
• Television Academy, Outstanding Comedy Series 2025 nominees and winners.

Featured image: an empty set-style living room with a red sofa, a green armchair, a floor lamp and wood-slat walls, photo by The Grid Rooms on Unsplash, used under the Unsplash License. It is an illustrative image, not a photo of any show, set or person mentioned in this article.