A mural across from the High Line was destroyed by the construction of a new art gallery, a Florida artist claims.

Jordan Betten installed “Lady Luck,” an 8-by-20-foot mural which depicts a sweeping female figure flying across a sky-blue background, on a squat two-story building across from the elevated park trail in 2013.

The only thing between the mural and the High Line was an empty lot on West 27th Street.

But in April, contractors for Related Companies, which is developing a number of new art galleries in the neighborhood, removed a large chunk of Betten’s mural without notice, he contends.

Betten only found out about the destruction when a friend happened to walk by and see it.

He’s suing the developers in Manhattan federal court, alleging the “mutilation” of the mural has ruined his reputation.

The mural has been “cut up into multiple pieces,” his lawyer, Eric Baum, said.

Related Companies said it had not been served with the lawsuit.