Inspired by Alexandria Ocasio-Cortez’s upset primary victory over Rep. Joe Crowley last year, City Councilman Ritchie Torres plans to take on veteran Bronx Rep. José Serrano in the 2020 Democratic primary in the adjoining 15th District, The Post has learned.

Serrano — who was first elected in 1990, the same year as Crowley — could be ripe for the picking, Bronx party sources said.

Torres was elected to the council in 2013 at age 24 and re-elected in 2017. He was the first openly gay candidate elected to public office in The Bronx.

Like Ocasio-Cortez, Torres represents the left-progressive wing of the party. He is a member of the council’s progressive caucus, but also aligned himself with Bronx leaders in backing Corey Johnson for council speaker.

“Ocasio-Cortez . . . created an environment where challenges to incumbents are no longer off-limits,” a Bronx political insider said.

Torres confirmed his interest in Serrano’s seat when contacted by The Post on Sunday.

“Stay tuned!” he said.

Serrano’s office had no comment.