Nataliya Tobias

Nataliya Viktorivna Tobias (Наталія Вікторівна Тобіас, née Sydorenko (Сидоренко); born 22 November 1980 in Serov, Soviet Union) is a female former middle-distance runner from Ukraine, who specialized in the 1500 metres. She holds personal bests of 4:01.78 minutes for the 1500 m, 2:02.31 minutes for the 800 metres, and 8:51.32 minutes for the 3000 metres.

Tobias represented her country at the Olympics twice, including a 1500 m bronze medal at the 2008 Beijing Olympics. She also competed at the World Championships in Athletics in 2007 and 2011, and was the 1500 m gold medallist at the 2003 Summer Universiade. During her career, she won Ukrainian national titles in five different events.

Tobias received a two-year ban in 2012 for testing positive for testosterone at the 2011 World Athletics Championships.

National titles

 * Ukrainian Athletics Championships
 * 800 m: 2006
 * 3000 m steeplechase: 2007
 * 5000 m: 2003
 * Ukrainian Indoor Athletics Championships
 * 1500 m: 2004, 2008, 2011
 * 3000 m: 2003, 2011

Personal bests

 * 800 metres - 2:02.31 min (2006)
 * 1500 metres - 4:01.78 min (2008)
 * 3000 metres - 8:51.32 min (2003)
 * 5000 metres - 15:52.28 min (2003)