E20

E20 or E-20 may refer to:
 * E20 fuel, a mixture of 20% ethanol and 80% gasoline
 * European route E20
 * Tandberg E20, a videoconferencing system
 * E20, a postcode district in the E postcode area, announced in March 2011 for use on the site of the 2012 Olympics
 * London E20 (EastEnders), a fictional London postal district in EastEnders
 * EastEnders: E20, an Internet spin-off from EastEnders - also shown on BBC Three
 * E20 (nightclub), a fictional nightclub in EastEnders
 * Enterprise 2.0
 * Lotus E20, a Formula One racing car from Lotus F1 Team for the 2012 season
 * Toyota Corolla (E20), a car
 * General Electric E-20, the largest model of GE's Elec-Trak electric tractor, arguably equivalent to a small 20 hp fossil-fueled tractor
 * Nimzo-Indian Defense, Encyclopaedia of Chess Openings code
 * Chūō Expressway (between Takaido IC and Okaya JCT on main route), route E20 in Japan
 * Maju Expressway, route E20 in Malaysia