Two NYPD police officers were arrested late Thursday — one for slapping his toddler son, and the other for punching a woman during a traffic dispute, cops said. 

Officer Freddy Difo, 29, was arrested around 5 p.m. in the Bronx for allegedly slapping his 3-year-old son in the face, causing redness and bruising, police said. 

He was charged with acting in a manner injurious to a child and assault, according to authorities.

Difo was arrested in the confines of the 52nd Precinct, which covers several neighborhoods in the north Bronx, cops said.

Hours later, around 10:25 p.m., Officer Nasimdzhon Melikov, 34, got out of his car during a traffic dispute with a 38-year-old woman in south Brooklyn and punched her in the face, police said. 

The victim was taken to Coney Island Hospital for an evaluation. 

Melikov was arrested in the confines of the 61st Precinct and charged with assault and menacing, cops said.