The 27-year-old "Avengers Assemble" actress was here dressed down in a T-shirt and glasses having plenty of fun with Zapata, reported New York Post online.
"Scarlett looked like she was completely flirting with Domingo," a source said.
Johansson also hung out with actor Sam Rockwell, who arrived following a screening for his latest movie, "Seven Psychopaths" but her low-key look confused many of the nightspot's revellers.
"I didn't even recognise her," an onlooker said.
Johansson, who was married to Ryan Reynolds from 2008 to 2011, appeared to be enjoying without her advertising executive boyfriend Nate Taylor to the nightspot.