John Cronin is an Irish boccia player. He won a gold medal alongside Margaret Grant at the 2000 Summer Paralympics in the mixed pairs BC3 boccia event.
Cronin began playing boccia in 1996 and won a bronze medal two years later in the 1998 Boccia World Championships. He also earned two silver medals at the 1999 Boccia World Cup.[1] In the 2000 Summer Paralympics, his first Paralympic Games, Cronin won a gold medal with Margaret Grant in the mixed pairs BC3 boccia event.[2] [3] In the 2002 World Championships in Portugal, Cronin won two bronze medals.[1] He later competed in the mixed pairs BC3 boccia event at the 2004 Summer Paralympics but failed to qualify for a medal.[4] After winning another silver medal at the 2008 Boccia World Cup, Cronin and his partner Steven Valentine won a silver medal at the 2009 Boccia European Championships in Porto, Portugal.[1]