Iulia Olteanu (née Negură; born 26 January 1967) is a Romanian former long-distance runner who competed in cross country, track and road running events.

She was victorious at the 1996 European Cross Country Championships but was stripped of her title as she had failed a test for the steroid stanozolol and received a two-year competitive ban for doping.

Among her other achievements are two consecutive 10,000 m titles at the Summer Universiade, as well as circuit wins at the Great South Run, Sapporo Half Marathon and the Chiba and Fukuoka Cross Country meetings.

Born Iulia Negură in Piatra Neamț, Romania,[1] she made her debut at the IAAF World Cross Country Championships in 1987, coming in 50th place.

[9] She was studying at university during this period and as a student she won the Summer Universiade titles in the 10,000 m in 1993 and 1995,[10] as well a gold medal at the 1994 FISU Cross Country Championships.

[12] She took twelfth place at the 1996 IAAF World Cross Country Championships, helping Romania to another team bronze, and made her Olympic debut on the track in August.

[4] Olteanu ended the year with her first win at a major continental competition, taking the gold medal at the 1996 European Cross Country Championships.

[15] She made her international return at the 1999 European Cross Country Championships and helped Romania to the team silver alongside Constantina Diţă.