The EP05 is a Polish modification of Czech electric locomotive EU05 used by Polish railway operator (PKP).

Class E 499.1 electric locomotives were constructed and built by Škoda Works in Plzeň for use in Czechoslovakia by the ČSD. They were also used outside Czechoslovakia in Poland as class EP05 and in the Soviet Union as ЧС3 (ChS3). In North Korea, licence built copies were used.