E20

E20 or E-20 may be:

• 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, a fictional London postal district in EastEnders
• EastEnders: E20, an Internet spin-off from EastEnders
• E20 (nightclub), a fictional nightclub in EastEnders, now known as R&R
• e20 System Evolved Roleplaying Game, published by GMSarli Games under the Open Game License
• Enterprise 2.0
• Engagement 2.0