An off-duty NYPD officer, her sister, and two other people were arrested Sunday following a wild road-rage brawl in Queens.

Officer Marlena Nelson, 37, was hit with two counts of assault for the Easter morning dust-up, according to police.

Nelson allegedly socked two women in the face — 32-year-old Diamond Monroe and an unidentified 55-year-old woman — after she and her sister Veronica Nelson, 46, got into an argument with them near Baisley and Merrick boulevards in St. Albans about 9 a.m., cops said.

Monroe responded in kind by allegedly punching and choking Marlena, according to police.

Veronica was also charged with assault for allegedly punching the women.

Meanwhile, 28-year-old Antoine Monroe jumped into the fray, allegedly punching Veronica and damaging her phone, officials said.

It was not clear what exactly sparked the melee, but cops said the Nelsons were in one car while the Monroes and the unidentified 55-year-old were in another.

The four fighters were all arrested at 12:35 p.m. and given desk appearance tickets, though the 55-year-old was spared charges, because she was only a victim, cops said.

The cop, who was assigned to Midtown South and has worked for the department for 10 years, was suspended without pay following the incident, officials said.