Reinforced by new stars Ezequiel Lavezzi, Zlatan Ibrahimović and Thiago Silva, PSG warmed up for the 2012–13 season with the aim of winning the league crown that dramatically eluded the club the previous year. Paris began at home to Lorient at the Parc des Princes. Les Merlus caused Paris plenty of problems and the match ended 2–2 thanks to Ibrahimović's first brace of the season. The PSG squad took a little time to get going and after three consecutive draws, Les Parisiens recorded their first victory in Week 4. It was in the north of France that Paris finally launched their campaign against Lille and a 2–1 victory featuring another double from Ibrahimović. Another three points followed against Toulouse (2–0), before it was time for the UEFA Champions League. After nearly a decade's absence, PSG marked their return to Europe's premier club competition with a resounding 4–1 victory over Dynamo Kyiv.

Buoyed by their continental success, the capital club recorded their largest ever away win with a 4–0 demolition of Bastia before defeating Sochaux-Montbéliard 2-0, in a perfect month of September. October began less well with a late 1-0 defeat away to Porto. The it was time to travel to the Stade Vélodrome for Le Classique against Olympique de Marseille. Inspired, Zlatan netted two more remarkable goals as the match ended 2-2. It got even better as Stade de Reims, Dinamo Zagreb, Nancy and Marseille, this time in the Coupe de la Ligue, all fell to Paris. The first defeat of the campaign came soon after, 2–1, to Saint-Étienne. It marked the start of a difficult month of November for the side from the French capital. Fortunately, a festive December started in style with a 2–1 win over Porto which saw Paris clinch top spot in Group A of the Champions League. Next up came Evian (4-0), Valenciennes (0–4) and Lyon (1–0); all fell victim to the high-flying Les Rouge-et-Bleu. A comprehensive 3-0 win over Stade Brest in the final match of the calendar year saw PSG secure the honorary title of autumn champions.

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