Simona Halep (Romanian pronunciation: [siˈmona haˈlep]; born 27 September 1991) is a Romanian professional tennis player. The Women's Tennis Association (WTA) ranked her world No. 1 in singles on two separate occasions between 2017 and 2019. She reached the No. 1 ranking for the first time on October 9, 2017. On her second occasion, she held the ranking for 48 consecutive weeks. In total, she has been No. 1 for 64 weeks, which ranks tenth in the history of female tennis. Halep was the year-end No. 1 in 2017 and 2018.
She is currently ranked world No. 2 on the WTA Tour, and has won 18 WTA singles titles. Halep has also finished runner-up 15 times.
Halep first broke into the world's top 50 at the end of 2012, reached the top 20 in August 2013, and finally the top 10 in January 2014. She won her first six WTA titles in the same calendar year in 2013 (a feat that was last achieved by Steffi Graf in 1986 when she won her first 7), being named the WTA's Most Improved Player at its end, as well as being named ESPN Center Court's 2013 Most Improved Player.
Halep won her first major tournament at the 2018 French Open, having previously lost in the 2014 French Open, 2017 French Open and 2018 Australian Open finals. She also reached the final of the 2014 WTA Finals, losing to Serena Williams in straight sets after having defeated her earlier in the tournament 6-0, 6-2. Halep continued her success throughout 2015 and 2016 seasons, winning three titles in each respective season (including two Premier Mandatory titles) and remaining within the top 10.
Halep was the most clicked player on WTATennis.com for two consecutive years (2014–2015), when she was awarded the WTA Most Popular Player of the Year prize. After the 2017 Wimbledon Championships, Simona Halep became the active player with the most consecutive weeks within the Top 10. Halep has also won WTA's Fan Favorite Singles Player in 2017 and 2018, and WTA's Player of the Year in 2018. In December 2018, Halep was chosen by ESPN most dominant tennis player of the year and ranked ninth in The Dominant 20 top of the most dominant 20 athletes in the world. She notched a 46-8 record.
She was given the award of Cetățean de onoare ("Honorary Citizen") of the city of Bucharest in 2018.