Mark David Lemmer (born 27 April 1967) is a British former auto racing driver, who is also presently the managing director of the family run Barwell Motorsport racing team which was set up by his father Richard.

The team have run cars in different disciplines around the world, in 2008 they entered Aston Martins in the American Le Mans Series.

Paul Butler raced an ex-Alan Jones Brabham BT28 in F3 and Formula Atlantic in the 1970s.

After a year in the National Saloon Cup, he returned to the BTCC in 2000 with a Honda Integra in the newly formed Class B.

His latest drive was in for the works Mitsubishi rally team in the 2008 Britcar 24-Hour race at Silverstone.