A thief swiped $140,000 worth of cash and luxury goods from a Midtown hotel last month, police said Wednesday.

The victim, a 39-year-old man from Baltimore, told police he lost his room key at the Park Hyatt Hotel on 57th Street at about 11 p.m. on July 10, authorities said.

When he gained entry to the room, he and found his jewelry, clothes and cash missing, cops said.

The thief swiped a $20,000 Mount Blanc pen, a $10,000 ring, a $40,000 Rolex watch, two suits, and $8,000 in cash, police said.

Cops are looking for the suspect, who was last seen wearing tan pants, a black shirt, sunglasses and a gold necklace.