The Lotus E20 is a Formula One racing car designed and to be produced by the Enstone-based Lotus F1 Team for the 2012 Formula One season. The E20 will be the twentieth Formula One car to be designed at Enstone since 1992, and is named in tribute to the contribution made by the facility and its personnel in their twenty-year history. The car will also be the first from Enstone to carry the Lotus name, since the team ceased using the Renault name following their renaming from Lotus Renault GP at the end of 2011. The team will continue to use Renault engines for the car. The car, which was launched by the team on its website on 5 February 2012, will be driven by 2007 World Drivers' Champion Kimi Räikkönen and reigning GP2 Series champion Romain Grosjean, both of whom return to Formula One after a two-year absence.

The Lotus E20 was planned to feature a "reactive ride height" suspension system — a mechanical device designed to maintain ride height under braking — sometime in the 2012 season. Lotus (and formerly both as Lotus Renault GP and Renault F1 Team) had been developing the system, with complete FIA approval, since at least January 2010. The FIA subsequently decided that such systems were in breach of their regulations, on the grounds that the primary function of such a device was improve the aerodynamic performance of cars, and was therefore in violation of Article 3.15 of the technical regulations. The teams were notified of the FIA's decision on 20 January 2012, and as a consequence these systems will not feature on 2012 cars.

Lotus may refer to:

E20 or E-20 may be: