•
Edmonton Radial Railway, a former streetcar service in Edmonton, Alberta •
Eestimaa Rahvarinne, the Estonian Popular Front •
Eesti Rahvusringhääling, a radio and television organization in Estonia •
Einsatzstab Reichsleiter Rosenberg, a Nazi organization which appropriated cultural property during World War II •
Electronic Regulatory Reporting, a universal regulatory reporting solution • Epsilon Rho Rho, a fictional fraternity in the "
Mars University" episode of
Futurama •
Era Alaska, a regional airline which uses the ICAO designation ERR • Err, a fictional character in the animated comedy
Aqua Teen Hunger Force • Errol Airport,
Errol, New Hampshire, by IATA designator ==People with the surname==