2point4 Children is a BBC Television sitcom that was created and written by Andrew Marshall. It follows the lives of the Porters, a seemingly average, working-class London family whose world is frequently turned upside-down by bad luck and bizarre occurrences.

The show was originally broadcast on BBC One from 1991 to 1999, and ran for eight series, concluding on 30 December 1999 with the special episode "The Millennium Experience". The show is regularly repeated in the UK. In Australia showings are on UKTV. The name of the show comes from the stereotypical average size of a typical nuclear family in the UK at the time of the writing of the first series.

The show regularly picked up audiences of up to 14 million throughout the 1990s, with an average of between 6 and 9 million. The final episode was viewed by 9.03 million people.

Lead actor Gary Olsen died in 2000, effectively ruling out a return of the show for any further series.