Jordan Nathaniel Marcel Knight (born May 17, 1970) is an american singer-songwriter best known as the lead singer in the boy band, New Kids on the Block (NKOTB), and actor, who rose to fame in the 1980s and 1990s. He is best known for his distinctive falsetto style of singing, influenced by The Stylistics.

Knight was born in Worcester, Massachusetts.

Knight was a judge on the American Idol spin-off, American Juniors. He was a third season cast member on the VH1 reality television series The Surreal Life with other celebrities in 2004. He later appeared in the 2007 spin-off The Surreal Life: Fame Games.

In 2005, Knight appeared on the British show Hit Me Baby One More Time, where he performed "Give It To You".

In September 2005, he also starred in a British documentary on five in the UK called Trust Me - I’m A Holiday Rep. Six celebrities spent 10 days in the role of an Olympic Holidays holiday rep in Ayia Napa, Cyprus.

Knight also appeared on Identity, hosted by Penn Jillette.