This article lists the seasons played by Cardiff Rugby from 2003, when they formed. The list details the club's achievements in senior league and cup competitions, and the top scorers for each season.

Seasons SeasonCeltic LeagueHeineken CupAnglo-Welsh CupEuropean Challenge CupPWDLFAPtsPos2003-042211011570467546thPool2004-05208111350404409thPool2005-06221109475389634thPoolGroup2006-07201316447327632ndPoolSF2007-08181206395315562ndQFGroup2008-0918819322361386thSFW2009-10181008349315445thPoolSFW

Key

Key to league record: P = Played W = Games won D = Games drawn L = Games lost F = Points for A = Points against Pts = Points Pos = Final position

Key to rounds: QR = Qualifying round Group = Group Stages QF = Quarter-finals SF = Semi-finals RU = Runners-up W = Winners

ChampionsRunners-up

References