The 1905–06 season was St Helens' eleventh in the Northern Rugby Football Union, the 32nd in their history. After finishing 12th in Division 1 the season previous, St Helens were expected to take part in Division 2 from 1905. However, the two divisions became one 31-team Championship, saving the club from relegation. They finished in a fairly respectable 14th. In the South West Lancashire League, St Helens finished fifth in a six-team league. In the Challenge Cup, the club did not even make the first round proper, as they were defeated by Rochdale in the Preliminary Round.

NRFU Championship TeamPldWDLPFPAPtsPct1Leigh3023252451304880.002Hunslet3225073701485078.123Leeds3425273771235276.474Oldham40282104461255872.505Keighley2819182551643969.646Wigan34221114411674566.177Hull Kingston Rovers36223112462184765.278Broughton Rangers34211124002224363.239Halifax38208102612324863.1510Runcorn30173102641363761.6611Huddersfield30172112241743660.0012Bradford34192133711994058.8213Swinton32173122031683757.8114St. Helens30161132442123355.0015Warrington38193162701844153.9416Wakefield Trinity32134151882623046.8717Hull36161193042203345.8318Salford34143172722703145.5819Pontefract28111162111962341.0720Batley34115181732152739.7021Widnes28102161292422239.2822Dewsbury36132211622522838.8823Bramley2692151262462038.4624York34112211702492435.2925Barrow3294191383242234.3726Normanton244218502801020.8327Millom20321577328820.0028Castleford20321545325820.0029Rochdale Hornets3236231053271218.7530Morecambe26242099282815.3831Brighouse Rangers26322187333815.38

References