The Brazilian footballer and American basketball star were pictured exchanging jerseys and joking around with each other as they sat in a gymnasium.
Curry, who has won back-to-back NBA titles with the Golden State Warriors, was also enjoying conversation with the Paris Saint-Germain forward as he continues to spend time in Europe during the off-season.
Curry has twice been named Most Valuable Player in the NBA and has helped Golden State Warriors to three titles overall in a stunning basketball career.
Meanwhile, Neymar enjoyed a relatively relaxed Friday night as he sat out PSG's comfortable 4-0 Ligue 1 win over Saint Etienne at Parc des Princes.
The Brazilian took in the game from the stands after playing 90 minutes for his national team in the United States in the early hours of Wednesday morning.
He was pictured alongside team-mate Kylian Mbappe, who was also afforded the night off by manager Thomas Tuchel.The newly-installed German boss was fortunate enough to be given the chance to rest his two principle attacking threats as they prepare to launch their assault on the Champions League title.
Opening group stage fixtures don't get much more difficult for the French giants though as they travel to Merseyside to take on Liverpool on Tuesday night.
The Reds, last season's beaten finalists in Kiev, were paired with PSG as well as Napoli and Red Star Belgrade in Group C of the continental competition.