A career con artist will do hard time for passing himself off as a United Nations rep to run a Haitian earthquake-relief scam, a judge ruled today.

Marc Payen, 29, was sentenced to serve five to 10 years in prison by Manhattan Supreme Court Justice Thomas Farber, who also ordered him to pay $17,179.05 in restitution.

Payen had been previously busted for claiming to be an immigration lawyer. In this latest scam, Payen used bogus UN stationery to raise funds for medical and humanitarian efforts in Haiti.

He was convicted of two counts of grand larceny, forgery and criminal possession of a forged instrument.