1890–91 Rugby Union County Championship

The 1890–91 Rugby Union County Championship was the third edition of England's premier rugby union club competition at the time.

Lancashire won the competition for the first time, winning all ten of their county fixtures during the season, which included beating the three teams declared champions of their respective divisional groups.

Championship Series
Squad
 * M Atkinson (Wigan)
 * John Berry (Tyldesley)
 * T Brayshaw (Wigan)
 * Walter Bumby (Swinton)
 * Tom Coop (Leigh)
 * T Craven (Salford)
 * W Cross (St Helens)
 * E H Flower (Broughton)
 * Dai Gwynne (Oldham)
 * Tom Kent (Salford)
 * James Holt Marsh (Swinton)
 * William McCutcheon (Oldham)
 * James Pyke (St Helens Recreation RLFC)
 * C Rome (Broughton)
 * T Rothwell (Swinton)
 * J Strang (Liverpool)
 * Jim Valentine (Swinton)
 * T Whittaker (Manchester)
 * R P Wilson (Liverpool Old Boys)