At the French Open last month, when her ranking was 451, she was not seeded and came up against 17th seed Barty in the second round, winning in three sets.
While WTA rules allow women who miss time because of a pregnancy to enter events based on their pre-absence ranking, there is no guarantee of a seeding, a policy which has been the subject of much debate in recent months because of Williams' status.
The BBC's tennis correspondent Russell Fuller says Cibulkova will not be the only one enraged by the decision.
Wimbledon will release the draw on Friday.
Simona Halep is No. 1 in the women's draw, with defending champion Garbine Muguruza at No. 3 behind Caroline Wozniacki. They are followed by Marin Cilic, Alexander Zverev and Juan Martin del Potro.
That's the major reason we play for thirteen days and not on the middle Sunday - the court gets absolutely soaked that day to make sure it doesn't die.' Henman also spoke about what Wimbledon could introduce in the future: 'I feel we need an interim stadium.
Former champion Andy Murray, however, misses out on a seeding as he continues his comeback from hip surgery. Petra Kvitova, the two-time champ who is seeded No. 8, pulled out of her third-round match at Eastbourne on Wednesday with a hamstring problem, putting her status for Wimbledon in doubt. I have the right and I should be seeded and if they put her in front of me then I will just lose my spot that I am supposed to have.
Carlos Vela, Javier Hernandez score in Mexico win
Miguel Layun pressed for a second goal before the break but his shot from a low cross-field drive was tipped away by Jo Hyeon-woo. Son Heung-min scored a consolation goal for South Korea in injury time, sending a powerful shot past goalkeeper Guillermo Ochoa .
Trump threatens 20 percent U.S. tariff on EU car imports
In a retaliatory move, China responded with a 25% tariff on U.S. imports including Bourbon, which will come into play on 6 July. Commerce Department is investigating whether imports of automobiles and auto parts pose a risk to national security.
Meek Mill Debuts 'Stay Woke' with Miguel at BET Awards
His Grind Day Remix song earned him the Hiphop Song of the Year at the 2018 award at the Vodafone Ghana Music Awards. South African artist Sjava has won the "Viewers' Choice Best International Act" category at the BET Awards .
U.S. set to announce departure from UN Human Rights Council
The report says that while the US has always been the most unequal among developed nations, it's getting worse under Trump. UN High Commissioner for Human Rights, Zeid Ra'ad al-Hussein, called on Washington to halt its " unconscionable " policy .