Jonathan Byron Alexander Joseph (born 21 May 1991) is an English professional rugby union player who plays as a centre for Pro D2 club Biarritz.

[4] At club level, his first senior rugby came on loan to Barnes RFC as injury cover; however, his breakthrough season was for Irish in 2010–11, when he played in thirteen Premiership games and scored five tries.

[6] Joseph joined Bath at the start of the 2013–14 season and quickly forged a successful midfield partnership with inside centre Kyle Eastmond.

After a searing run, again escaping the tackles of many of the Toulouse defenders, he released teammate Ross Batty, who in turn passed to Francois Louw to complete the move in scoring what was a truly audacious try.

[11] Later that year he was a member of the squad that finished as runners-up to New Zealand in the final of the 2011 IRB Junior World Championship alongside future England teammates Mako Vunipola, Joe Launchbury, George Ford, Owen Farrell, Elliot Daly and Christian Wade, amongst others.

[14] Joseph was one of thirteen uncapped players selected by England head coach Stuart Lancaster for the 2012 mid-year tour of South Africa.

[29] He started all five games during the competition including the final match as England defeated France to achieve their first Grand Slam in over a decade.

[35] He also started in the final game of the competition as England missed out on a consecutive grand slam with defeat away to Ireland which also brought an end to a record equalling eighteen successive Test victories.

[39][40] In the 2019 Rugby World Cup Final he came off the bench during the second-half to replace Jonny May as England were defeated by South Africa to finish as runners-up.