Seven-time Wimbledon champion Serena Williams has been seeded 25 for this year's women's singles by the organisers despite being ranked 183 in the world.
Slovakian Cibulkova had been left less than impressed by the prospect ahead of the seeding announcement.
While she enjoys a protected ranking and can enter the grand slams without having to qualify, that does not automatically mean she can also be handed a seeded position.
The U.S. Tennis Association says it does intend to seed Williams for the U.S. Open, which begins in August.
Some players and tennis commentators have said it is unfair that women who go on maternity leave to have a baby lose their ranking, and therefore their seeding at big tournaments.
The 31-year-old - who spent almost 11 months off the court due to a hip injury and then a subsequent operation - has not yet committed himself to play at Wimbledon and is due to play compatriot Kyle Edmund at Eastbourne later Wednesday. The draw will be selected Friday, and the tournament starts Monday.
French Open champion Simona Halep is seeded one with Australian Open champion Caroline Wozniacki, former Wimbledon victor Garbine Muguruza, US Open champion Sloane Stephens and Elina Svitolina making up the top five.
"Why should I not be seeded if I have the right to be?"
Sharapova is seeded one place above her whilst Serena's sister Venus, who lost in last year's final, is ninth seed. "I think and I hope - and it should be under review - to change these rules".
In the men's draw, after Federer and Nadal, 2017 runner-up Marin Cilic is No. 3, followed by Alexander Zverev and Juan Martin del Potro. I think that's good.
Former Australian Open finalist Dominika Cibulkova, who is ranked No. 32 in the WTA rankings, is the player most disadvantaged by the decision to seed Serena Williams. He is set to play Edmund in Eastbourne later on Wednesday.
In 2011, tournament officials seeded Williams, its defending champion, No. 7 although her ranking at the time was 26th in the world.