Keith Peter Thomas Francis Julian John Duffy (born 1 October 1974) is an Irish singer, actor, radio and television presenter and drummer who began his professional music career as part of Irish boy band Boyzone alongside Ronan Keating, Mikey Graham, Shane Lynch and Stephen Gately in 1993.

The band decided to focus on solo projects in 2000, since which Duffy has taken acting roles in soap operas such as Coronation Street and Fair City.

He played a backing role in Boyzone, with Ronan Keating and Stephen Gately handling the majority of lead vocals.

In 1994, Duffy and fellow band member Shane Lynch were involved in a nearly fatal car crash; both survived without serious injuries.

[5] Duffy's profile was raised as a result of his appearance on the first series of the UK's Celebrity Big Brother in 2001, where he finished third out of six, and on Lily Savage's Blankety Blank.

[6][7] In the same year, he appeared on the celebrity special in the fourth season of Fort Boyard alongside Tris Payne, Scott Wright, Sally Gray, and Nell McAndrew.

Duffy went on to play the part of James "Ringo" Leyden in 2008 in the Irish soap opera Fair City, with his character leaving the show in 2009.

He reportedly had to bow out of the production due a prior contract stipulation committing him to a 2010 Coronation Street return, which would have interfered with the film's schedule.

[15] Following the end of the "Brother" Tour, Duffy completed a half Ironman Triathlon raising money for Irish Autism Action.

[20] Boyzlife is a duo consisting of Duffy and Brian McFadden, who previously appeared as members of '90s and 2000s boybands Boyzone and Westlife, respectively.

Junior travels around the United Kingdom with Charlie The Duck, who accompanies him, encouraging people to speak up about mental health.

[24] After Mia was diagnosed with moderate autism, Duffy has become active in raising awareness of the condition and in October 2014 received an Honorary Fellowship from the RCSI.

[25] Duffy was also present in Kilcloon, Meath on 2 March 2012 for the official opening of 'Stepping Stones', a specialised school for children with autism stating "All we want to do is give our kids a chance in life".