The 2011-2012 Season of Mansfield Town F.C. was its fourth in the Conference National, following their relegation from the Football League at the end of the 2007–08 season. The club also competed in the FA Cup and the FA Trophy. The Stags played their home games at Field Mill, after agreeing a new one-year lease with landlord Keith Haslam. Chairman John Radford announced that he had purchased the stadium from Haslam on 1 March 2013, which would have allowed the club to participate in the Football League the following season, had they gained promotion.

It was manager Paul Cox's first season in charge, after replacing previous incumbent Duncan Russell, whose contract was not renewed after the previous season. The Stags' youth team reformed for the 2011-12 season, and took part in the Football Conference Youth Alliance under-19 league and cup, along with the Midland Youth Cup.

Free transfer unless otherwise stated.

† £6,000 fee ‡ £20,000 fee

† £100,000+

Mansfield prepared for the season with 8 pre-season friendlies, 2 at home and 6 away. Another game with local team Worksop was arranged, but then cancelled. The first-team squad, along with manager Paul Cox and assistant Micky Moore also faced local cricket side Shirebrook CC in a friendly 20/20 game, which was lost.

† = Trialist

Updated to games played on 28 April 2012.
Source: Football Conference
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored
(C) = Champion; (R) = Relegated; (P) = Promoted; (E) = Eliminated; (O) = Play-off winner; (A) = Advances to a further round.
Only applicable when the season is not finished:
(Q) = Qualified to the phase of tournament indicated; (TQ) = Qualified to tournament, but not yet to the particular phase indicated; (RQ) = Qualified to the relegation tournament indicated; (DQ) = Disqualified from tournament.

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