1985–86 Rugby Football League season
|Slalom Lager Championship|
|Number of teams||16|
|Man of Steel||Gavin Miller|
|Top try-scorer(s)||Ellery Hanley 63|
|Promotion and relegation|
|Promoted from Second Division|| Leigh
|Relegated to Second Division|| York
|Top point-scorer(s)||Chris Johnson 400|
|Top try-scorer(s)||John Henderson 27|
The 1985–86 Rugby Football League season was the 91st ever season of professional rugby league football in Britain. Sixteen teams competed from August, 1985 until May, 1986 for the Slalom Lager Championship.
Slalom Lager League Champions were Halifax.
Halifax finished on top of the First Division table to claim their fourth, and to date, last championship, but Warrington defeated them in the Rugby League Premiership competition.
Paul Bishop of Warrington scored a record equalling 5 drop goals in the Premiership semi-final against Wigan on 11 May 1986.
The 1985-86 Silk Cut Challenge Cup Final was played by Castleford and Hull Kingston Rovers at Wembley before a crowd of 82,134. was won by Castleford defeated Hull Kingston Rovers 15-14. Castleford's scrum half back, Bob Beardmore was awarded the Lance Todd Trophy as man of the match.