The Big Brother host will take over the role from Holly Willoughby and Reggie Yates, who presented the show's first and second series.
In a statement released by the BBC today (September 14), Willis confirmed that she would be taking on the role for the reality TV contest's third series in 2014. She said: "The Voice is an absolutely brilliant TV show with the unique ability to showcase and nurture amazing raw talent.
"I couldn't be more excited to be a part of it and I cannot wait to get started."
Willoughby and Yates both also revealed that they would be leaving The Voice UK in the statement. Willoughby said: "After much consideration, I will not be returning for series three of The Voice UK. I've had two wonderful years on the show, and I feel very privileged to have been a part of it.
"Finding the right balance between my work and family life is my priority and this has contributed to my decision. I look forward to watching the next series from my sofa, and I wish the whole team the best of luck."
Yates added: "I've had a fantastic time on the last two series of The Voice UK and I wish all the team the best of luck for the new series."
A new co-presenter to accompany Willis will be announced next week.
Kylie Minogue was revealed this week to be one of the new coaches for the show's third series alongside Sir Tom Jones and will.i.am, following Jessie J and Danny O'Donoghue's departure from The Voice UK.
A fourth coach to complete the panel has yet to be announced.