Mario Haberfeld is a Brazilian racing driver.
After winning the British Formula Three Championship in 1998, he drove in Formula 3000 from 1999 until 2002. He posted some decent results, but struggled his first season driving for the McLaren junior team failing to score a single point while teammate Nick Heidfeld won the series championship. It didn't reflect highly on McLaren's Formula One team director Ron Dennis and the highlight of his F1 career were a few tests for Williams.
In 2003 he moved to the Champ Car World Series driving for Eric Bachelart. His team shared information with a fellow rookie team driving a Reynard chassis, Emerson Fittipaldi's team with future F1 driver Tiago Monteiro. He scored a best finish of 4th his first start in St. Petersburg. In 2004 he was a field-filler driving the lone Reynard in the series for Derrick Walker, but proved his worth with another pair of top-five finishes. Unfortunately no one picked him up for 2005 and his only opportunity was to be a reserve driver for Timo Glock in Monterrey after Glock suffered a massive testing shunt at The Milwaukee Mile. He drove a few Grand-Am races for Tuttle Team Racing at the end of the year.