Paul Mullin led the celebrations at Boundary Park, after keeping his cool to convert from the penalty spot deep in stoppage time to complete a comeback win.
Wrexham trailed early on, after former striker Mike Fondop opened the scoring, but Ben Tozer's late equalier and Mullin's even later winner sent the Red Dragons to the top of the league.
In front of 2,520 away supporters - helping to make up Oldham's highest attendance at Boundary Park since their FA Cup win against Liverpool in 2013 - the win made it eight games unbeaten for Wrexham.
Relive the best bits, and see if you can spot in yourself amid the celebrations, in the gallery above - shot by Club Photographer Gemma Thomas.