EUR (originally called E42) is a residential and business district in Rome, Italy located south of the city centre. The area was originally chosen in 1930s as the site for the 1942 world's fair which Benito Mussolini planned to open to celebrate twenty years of Fascism; the letters EUR standing for Esposizione Universale Roma. EUR was also designed to direct the expansion of the city towards the south-west and the sea, and to be a new city centre for Rome. The planned exhibition never took place due to World War II.

Most of the area is property of EUR S.p.A., a company owned by the Ministry of Economy and the Rome municipality.