The WTA has announced the tour is suspended until May 2, due to the ongoing coronavirus pandemic.
Tournaments in Stuttgart, Istanbul and Prague will not be held as scheduled as the illness continues to disrupt the sporting calendar.
A statement released on Monday said a further decision would made late in the week about the remainder of the European clay-court campaign, which includes events in Madrid and Rome.
A WTA spokesperson said: "Due to the ongoing global coronavirus outbreak, the WTA tournaments in Stuttgart, Istanbul and Prague will not be held as scheduled.
"We regret this is the case for all of our loyal fans, players, sponsors and all those who support women's professional tennis.
"At this point in time, the WTA Tour is now suspended until May 2. We will make a decision in the week ahead regarding the remaining WTA European clay court events and will continue to monitor this situation closely and its impact on the 2020 WTA Tour season."
Events in Mexico and Colombia were called off last week because of international border closures and travel restrictions due to the coronavirus outbreak.
The ATP had already suspended all men's professional tennis tournaments for six weeks because of COVID-19.
Coronavirus - key sporting developments
- Premier League, EFL, FA Cup and Women's Super League suspended
- Champions League and Europa League matches postponed
- England Test series in Sri Lanka postponed
- Golf's Players Championship is cancelled
- F1 cancels Australian GP
- Coronavirus: NFL teams suspend travel
- NBA season suspended "until further notice"
- Euro 2020 likely to be postponed by UEFA
- ATP Tour suspended for six weeks
- PRO14 season postponed until further notice