Arnold Schwarzenegger may be back — in politics.

The “Terminator” star, former California governor and, until recently, host of “Celebrity Apprentice” is considering running for the US Senate in 2018, insiders told Politico.

Schwarzenegger, 69, may forsake the GOP for the Independence Party to challenge incumbent Democratic senator Dianne Feinstein, who will be 85 years old, the sources noted.

The ex-body builder has come under near-constant criticism from President Trump, ever since he took over hosting duties on the show Trump helped create.

“They hired a big, big movie star, Arnold Schwarzenegger, to take my place, and we know how that turned out,” Trump said at prayer breakfast last month.

“The ratings went right down the tubes. It’s been a total disaster. And Mark will never, ever bet against Trump again, and I want to just pray for Arnold, if we can, for those ratings, OK?” the president added.

Earlier this week, after it was announced Schwarzenegger would not longer be hosting “Apprentice,” Trump lashed out again: “Arnold Schwarzenegger isn’t voluntarily leaving the Apprentice, he was fired by his bad (pathetic) ratings, not by me. Sad end to great show.”

Schwarzenegger responded: “You should think about hiring a new joke writer and a fact checker.”

Schwarzenegger’s spokesman was coy about whether his boss would be a “Running Man.”

“Right now Gov. Schwarzenegger’s focus is on using his platform to bring some sensibility and coherency to Washington by fighting for redistricting reform, like we did in California,’’ Daniel Ketchell told Politico.

“We are keeping all of our options open as far as how we can accomplish that,” he added.