Kylian Mbappe netted either side of Neymar's effort before Mauro Icardi added a late fourth for PSG vs Amiens at the Parc de Princes.
Neymar's shock transfer to PSG for a then-world record 222 million euros came less than a year after he signed a contract that would have kept him at the Spanish club until 2021.
Kylian Mbappe's smart finish shortly after half-time and Neymar's late penalty saw PSG ease to victory at the Parc des Princes.
Paris Saint-Germain coach Thomas Tuchel has again been left frustrated by Neymar after the Brazilian took time out from recovering from his latest injury to fly to Madrid for the Davis Cup tennis.
The three points lifted Dijon into third from bottom in the Ligue 1 table while PSG will now need to regroup before facing Club Brugge in the Champions League.
Barcelona attempted to re-sign Neymar, sold to PSG for a world record 222 million euros ($249 million) in 2017, but the two teams were unable to agree a deal.
Ballon D'Or, the holder of the men's award, Luka Modric, and the world's most expensive player Neymar missed out as France Football unveiled nominees in four categories.
In an attempt to win over PSG fans, Neymar has looked a rejuvenated figure, scoring for a third time this season.
The Neymar-Barcelona dispute focuses on the contract renewal bonus that was signed between the player and the club in 2016.
Lyon vs Paris Saint-Germain: PSG followed up their impressive midweek Champions League victory over Real Madrid with the win in constant drizzling rain in Lyon.
The Court of Arbitration for Sport reduced Neymar's three-match Champions League ban to two games following an appeal.
Neymar was booed and insulted by sections of the PSG support in the Ligue 1 match against Strasbourg at the Parc des Princes.
Lionel Messi denied reports he had used his influence to try and force the Barcelona board to push through the deal.
Sao Paulo prosecutors said in a statement that investigators had found "indications of slanderous denunciation and extortion" in the woman's accusation.
Neymar has not featured at all for his current club this season amid the uncertainty surrounding his future.
The deal which the Barcelona officials will propose could include other players such as Philippe Coutinho or Ivan Rakitic.
Home fans unfurled a banner before kick-off translating to "Neymar. Get out".
Rumours surrounding Neymar's transfer continue to swirl unabated as the new Ligue 1 season kicks off this weekend.