|Born||14 February 1985|
Kursk, Soviet Union
|Height||1.83 m (6 ft 0 in)|
|Plays||Right-handed (double-handed backhand)|
|Prize money||US$ 45,025|
|Career titles||0 WTA, 1 ITF|
|Highest ranking||No. 285 (14 November 2005)|
|Career titles||0 WTA, 10 ITF|
|Highest ranking||No. 193 (20 February 2006)|
Julia Efremova née Vorobieva (born 14 February 1985 in Kursk) is a former Russian tennis player. She played under her maiden name of Vorobieva (aka Vorobeva) until February 2006. She married her coach Alexey Efremov and returned to the ITF circuit in March 2007.
She has won eleven ITF Women's Circuit titles in her career, one in singles and ten in doubles.
She has played on the qualifying draws of WTA Tour tournaments on many occasions. Her career-high singles ranking was world No. 285, which she achieved on 14 November 2005, and her highest doubles ranking No. 193, achieved on 20 February 2006.
In 2003, Julia tried to qualify for her first WTA event in Moscow, but fell to Anastasia Rodionova in the first round. In 2005, she played the qualifying draws of five tournaments (Pattaya, Hyderabad, Beijing, Guangzhou and Tashkent) but was unsuccessful in each.
In 2006, she tried qualifying in Bangalore, but was overpowered in round one by Daniela Kix. In 2007, she fell in the qualifying draws of Kolkata and Moscow, losing to Sandy Gumulya and Oxana Lyubtsova, respectively.
Julia's biggest title of her career was winning the Busan Challenger doubles event in 2005 in Busan. She won the title with Wynne Prakusya, defeating Seiko Okamoto and Ayami Takase in the final. Her only singles title came at Jakarta in 2004 where she won an ITF $10,000 event.
Singles finals: 1 (1–0)
|Winner||1.||19 December 2004||Jakarta, Indonesia||Hard||Yoo-Mi Jung||3–6, 6–1, 6–3|
Doubles Finals: 15 (10–5)
|Winner||1.||21 July 2002||Algiers, Algeria||Clay||Aleksandra Kostikova|| Susanne Filipp
|Winner||2.||13 April 2003||Mumbai, India||Hard||Ludmila Richterová|| Akgul Amanmuradova
|Runner–up||1.||8 June 2003||Ankara, Turkey||Clay||Gabriela Velasco Andreu|| Svetlana Mossiakova
|Winner||3.||27 June 2004||Protvino, Russia||Hard||Vasilisa Bardina|| Maria Gugel
|Runner-up||2.||4 July 2004||Krasnoarmeisk, Russia||Hard||Vasilisa Bardina|| Ekaterina Bychkova
|Runner-up||3.||2 August 2004||Vigo, Spain||Hard||Sandra Volk|| Andrea Benítez
|Runner-up||4.||13 December 2004||Jakarta, Indonesia||Hard||Yoo Mi|| Ayu Fani Damayanti
|6–4, 0–6, 5–7|
|Winner||4.||19 December 2004||Jakarta, Indonesia||Hard||Yoo Mi|| Chang Kyung-mi
|Winner||5.||7 March 2005||Benalla, Australia||Grass||Yuan Meng|| Lauren Cheung
|Winner||6.||20 March 2005||Yarrawonga, Australia||Grass||Lara Picone|| Emily Hewson
|Winner||7.||9 April 2005||Mumbai, India||Hard||Chan Chin-wei|| Sanaa Bhambri
|Winner||8.||4 July 2005||Krasnoarmeysk, Russia||Hard||Anna Bastrikova|| Ekaterina Lopes
|Winner||9.||21 August 2005||Nanjing, China||Hard||Xie Yanze|| Tomoko Sugano
|Winner||10.||6 November 2005||Busan, Korea||Hard||Wynne Prakusya|| Seiko Okamoto
|6–4, 6–7(6), 6–1|
|Runner-up||5.||4 May 2008||Adana, Turkey||Clay||Diana Isaeva|| Hülya Esen
|7–5, 1–6, [4–10]|