Scooby-Doo is a long-running American animated series produced for Saturday morning television in several different versions from 1969 to the present. The original series, Scooby-Doo, Where Are You!, was created for Hanna-Barbera Productions by writers Joe Ruby and Ken Spears, CBS executive Fred Silverman, and character designer Iwao Takamoto. Hanna-Barbera produced numerous spin-offs and related works until being absorbed in 1997 into Warner Bros. Animation, which has handled production since then. Although the format of the show and the cast (and ages) of characters have varied significantly over the years, the most familiar versions of the show feature a talking dog named Scooby-Doo and four teenagers: Fred "Freddie" Jones, Daphne Blake, Velma Dinkley, and Norville "Shaggy" Rogers.

These five characters (officially collectively known as "Mystery, Inc.", but never referred to as such in the original series) drive around the world in a van called the "Mystery Machine", and solve mysteries typically involving tales of ghosts and other supernatural forces. At the end of each episode, the supernatural forces turn out to have a rational explanation, typically criminal plots involving costumes, latex masks and special effects intended to frighten or distract. Later versions of Scooby-Doo featured different variations on the show's supernatural theme, and include characters such as Scooby's cousin Scooby-Dum and nephew Scrappy-Doo in addition to or instead of some of the original characters.

Scooby-Doo was originally broadcast on CBS from 1969 to 1976, when it moved to ABC. ABC aired the show until canceling it in 1986, and presented a spin-off, A Pup Named Scooby-Doo, from 1988 until 1991. Scooby-Doo returned to the air on the WB Network, during the Kids' WB programming block, in 2002. The current Scooby-Doo series, Shaggy & Scooby-Doo Get a Clue!, began in 2005 and airs Saturday mornings on The CW network. Repeats of the series are broadcast frequently on the Cartoon Network and Boomerang in the United States and other countries.