Richard Agar (born 20 January 1972) is an English professional rugby league coach who is the former head coach of the Leeds Rhinos in the Super League and a former professional rugby league footballer who played in the 1990s and 2000s.

He played at club level for the Dewsbury (Rams) (two spells), Featherstone Rovers (two spells), the Widnes Vikings and the Rochdale Hornets, and has coached at representative level for France, and at club level for the York City Knights, Hull F.C. (two spells, initially as Assistant Coach), the Wakefield Trinity Wildcats, and Warrington Wolves (First Team Coach c. 2014…2015).

Richard Agar's birth was registered in Pontefract district, West Riding of Yorkshire, England. He is the son of the rugby league footballer and coach; Allan Agar.

Agar played for Featherstone Rovers, Dewsbury Rams and Widnes Vikings, where he played 16 games in 2001 and won a Northern Ford Premiership Grand Final winners medal, but he turned down the opportunity to play for Widnes Vikings in 2002's Super League VII.

Agar made his début for Featherstone Rovers on Sunday 16 June 2002, and he played his last match for Featherstone Rovers during the 2003 season.

He spent four years as assistant coach at Hull F.C. under John Kear and Peter Sharp. In 2008 Hull F.C. appointed Richard Agar as their Head Coach following the departure of Sharp.

In September 2011 it was announced that Agar had signed a three-year deal with Wakefield Trinity Wildcats, and would become their head coach following the end of the 2011 season.

In February 2013, it was announced that Agar would coach France for the 2013 Rugby League World Cup. Agar coached France to the World Cup Quarter-Final