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 is a British reality TV programme about parents struggling with their children's behaviour, mealtime, potty training, etc. The United Kingdom version had aired on Channel 4 with E4 showing repeats since 2004. The programme returned to Channel 4 after a two-year break in 2010, with E4 also showing more repeats. The show features professional nanny Jo Frost, who devotes each episode to helping a family where the parents are struggling with their child-rearing. Through instruction and observation, she shows the parents alternative ways to discipline their children and regain order in their households. Frost is a proponent of the "naughty chair" theory of discipline and is strictly opposed to smacking.

In the United States, it aired on ABC and Style Network and currently airs on Up TV. The series ended in the United Kingdom on 8 October 2008 and ended on 18 March 2011 in the US. A spin-off of the show was produced and was titled America's Supernanny.

On March 27, 2019, it was announced that Supernanny will return for a 20-episode season that will premiere on Lifetime in 2020, Frost will also return as host.