The Chloe actress was spotted with Franck Raharinosy over the weekend while watching live tennis at Flushing Meadows for the US Open, according to People.
Raharinosy is a sports entrepreneur who co-owns New York ping-pong club SPiN. A representative for Seyfried was unable to confirm whether the pair are dating.
Seyfried split up with actor Ryan Phillippe in June after five months. She also dated her Mamma Mia! co-star Dominic Cooper for over three years, and was reportedly "devastated" to hear about his reunion with ex-girlfriend Ruth Negga.
Amanda Seyfried recently revealed that she would like to have children in the future.
Watch the Chloe trailer below: