The 1908–09 season was St Helens' 14th in the Northern Rugby Football Union, the 35th in their history. The club finished 17th out of 27 in the NRFU Championship. In the Lancashire League that ran concurrent to the national championship, St Helens finished eighth. In the Challenge Cup, the club were knocked out in the first round by Halifax.

NRFU Championship TeamPldWDLPFPAPtsPct1Wigan3228047062075687.502Halifax3428155261745783.823Oldham3226064881765281.254Batley3223364121764976.565Huddersfield34213105042924566.176Wakefield Trinity31201104713184166.127Salford32201114553094164.068Merthyr Tydfil1811161841562363.889Broughton Rangers32191124203303960.9310Warrington32182124732663859.3711Runcorn28161112711913358.9212Hunslet32181133612993757.8113Hull34191144873663957.3514Ebbw Vale24121112492692552.0815Leeds32151163983553148.4316Hull Kingston Rovers32141174294232945.3117St. Helens28113143124212544.6418York32131183945102742.1819Dewsbury30121173503242541.6620Keighley30121173383552541.6621Leigh28110172143082239.2822Swinton32111202584402335.9323Bradford Northern32110213244512234.3724Mid-Rhondda1851121112141130.5525Rochdale Hornets3082201953841830.0026Barrow3291222455071929.6927Widnes2863191973591526.7828Treherbert18411381212925.0029Barry18301576445616.6630Bramley263023162582611.5331Aberdare17101613440625.88

References