The 2020 Simona Halep tennis season officially began on 5 January 2020 at the Adelaide International. Simona Halep entered the season as the No.4 ranked player in the world and finished the year ranked as the No. 2 ranked player in the world and with the most titles alongside Aryna Sabalenka during the season, winning a total of 3 WTA titles. Throughout the season, she achieved a new personal record with a 17-match winning streak, commencing from the Dubai Championships, surpassing her previous performance of 15 consecutive victories dating back to early 2015. By the end of the 2020 season, she registered 23 wins and three losses.
Halep's 2020 singles schedule was cut short due to the COVID-19 pandemic, participating in only six tournaments: 2 Grand Slams and 4 WTA-tour level tournaments. Nevertheless, she clinched titles in half of these tournaments.
Singles: 3 (3 titles)
Players are ordered by letter. <small>(Bold denotes a top 10 player at the time of the most recent match during 2020, Italic denotes top 50.)</small>