A transgender journalist who was spit on and attacked by a couple of hate-spewing straphangers said in an interview with The Post that transphobic hate is all too common “while navigating public space.”

The encounter occurred around 8 p.m. on Friday while the 26-year-old woman, Serena Daniari, was waiting for the southbound C train at the W. 155th Street stop where the couple approached her, cops said.

Daniari told The Post Sunday she had her headphones in and was reading a book when an unknown man, believed to be in his 20s, asked her a series of unintelligible questions.

“I took my headphones out, I asked him to repeat himself… and upon hearing my voice he realized I was transgender,” she said.

“He started saying, ‘Oh you’re a guy. You’re a guy. You’re a tranny,’” Daniari recalled.

The man then spat on her and slapped her in the face, cops said.

An unidentified woman with the man, also believed to be in her 20s, slapped the 26-year-old’s iPhone out of her hand while making “derogatory remarks” when she tried to take a photo, according to cops.

“She was saying, ‘she definitely has a d–k, she definitely has a d–k,’” Daniari told The Post.

Police released a photo of the couple, who ran out of the station after the encounter.

“I swear, I just wish people would leave me alone… I don’t do anything,” a crying Serera Daniari said in a video that posted to Twitter nearly two hours after the apparent attack. “I just want to be left alone.”

I was just attacked by a couple on the train. They spit on me and hit me and called me transphobic slurs. pic.twitter.com/YgPDZncIpo — Serena Daniari (@serenajazmine) January 25, 2020

Daniari said transphobic hate is all too common in society.

“It’s a common experience while navigating through public spaces. I’ve heard it from my LGBTQ friends and colleagues,” she said.

The physical attack and spitting, though, was something she had never experienced before.

Mayor Bill de Blasio apologized for her horrid experience, saying “Transgender and non-binary New Yorkers deserve to travel in their city without fear.”

The NYPD’s Hate Crime Task Force is investigating the incident, the mayor said.

Daniari — whose work has appeared in The Guardian, Playboy and on CNN, according to her profile — thanked the mayor for his support for the trans community.

“The trans community is under attack and we need protection, now more than ever,” she wrote.

Gov. Andrew Cuomo also decried the attack Sunday and called for the State Police’s Hate Crimes Task Force to investigate.

“I’m sickened by the incident Friday in which a transgender woman in Harlem was assaulted by two individuals who struck her while hurling transphobic slurs,” Cuomo said in a statement.

“No one should ever have to live in fear simply for being who they are. New Yorkers embrace diversity and our differences because that’s what makes us unique and that’s what makes us great.”