Jason Gardiner (born 11 June 1965) is an Australian choreographer, singer, and theatre producer best known for his role as a caustic and controversial judge on the ITV shows Dancing on Ice, Born to Shine and Stepping Out.

Gardiner was a judge on the first series of the BBC talent show Strictly Dance Fever. From 2006 to 2011, Gardiner was one of the original judges on the ITV show Dancing on Ice. Gardiner returned to Dancing on Ice for its eighth series in 2013, but the show was cancelled after its ninth series in 2014. He returned as a judge on the show in 2018.

In 2006, Gardiner was one of the judges invited to take part in Torvill and Dean's Dancing on Ice, an Australian version of Dancing on Ice, screened on the Nine Network.