GT3 may refer to:
Automotive
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Porsche 911 GT3
The Porsche 911 GT3 is a high-performance homologation model of the Porsche 911 sports car. It is a line of high-performance models, which began with the 1973 911 Carrera RS.
The GT3 has had a successful racing career in the one-make national ...
, a high performance version of the Porsche 911
**
IMSA GT3 Cup Challenge, a one-make racing series featuring the Porsche 911 GT3
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IMSA GT3 Cup Challenge Canada
The Ultra 94 Porsche GT3 Cup Challenge Canada by Yokohama was a one-make racing series based in Canada utilizing Porsche 911 GT3s.
The Ultra 94 GT3 Cup Challenge Canada by Yokohama featured semi-professional drivers racing head to head in one of ...
, the Canadian subsidiary series
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Group GT3, a class of auto racing
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FIA GT3 European Championship, a defunct series based on Group GT3
Other uses
* ''
Gran Turismo 3: A-Spec'', a 2001 car racing game developed for the PlayStation 2
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British Rail GT3
GT3 (''gas turbine number 3'') was a prototype mainline gas turbine locomotive built in 1961 by English Electric at their Vulcan Foundry in Newton-le-Willows to investigate the use of its gas turbines in rail traction applications. It followed ...
, a prototype gas turbine locomotive
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