Hi-5 is an Australian children's television series, originally produced by Kids Like Us and later Southern Star for the Nine Network and created by Helena Harris and Posie Graeme-Evans. The program is known for its educational content, and for the cast of the program, who became a recognised musical group for children outside of the series, known collectively as Hi-5. It has generated discussion about what is considered appropriate television for children. The series premiered in April 1999 on the Nine Network and aired until 2011, before returning to Nine in 2017 with a revived series.