Tracy William Krohn (born August 26, 1954, in Houston, Texas) is an entrepreneur and auto racing enthusiast who was a new addition to the 2006 Forbes 400 list of the wealthiest Americans, at #320.

In March 2007 he and Lola Racing Cars created Proto-Auto LLC and purchased a chassis design and Grand American Daytona Prototype Constructors Licence from Multimatic Motorsports, a racing car constructor, to build a Lola chassis for Grand-Am Daytona Prototype competition in 2008 and beyond.

Krohn entered the Intercontinental Le Mans Cup in 2011, finishing second in the GTE-Am class standings.

They started off with a Ferrari F458 Italia in GTE-Am, but since 2015 they compete in the LMP2 class with a Ligier JS P2 powered by Judd.

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