Supernanny is a British reality television programme about parents struggling with their children's behaviour, mealtime, potty training, etc. The show features professional nanny Jo Frost, who devotes each episode to helping a family where the parents are struggling with child-rearing. Through instruction and observation, she shows 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 spanking.

The programme aired on Channel 4 from 7 July 2004 to 8 October 2008. A follow-up programme titled Jo Frost: Extreme Parental Guidance ran from 9 February 2010 to 5 August 2012. Supernanny has been adapted in other countries, including an American version (also with Jo Frost).