Singer Sinead O'Connor has announced she has converted to Islam and changed her name.

The Irish performer, known for her song Nothing Compares 2U, released the news via Twitter and revealed she is now called Shuhada' Davitt.

Sinead O'Connor said she has converted to Islam. Credit:Twitter

The 51-year-old said: "This is to announce that I am proud to have become a Muslim. This is the natural conclusion of any intelligent theologian's journey.

"All scripture study leads to Islam. Which makes all other scriptures redundant. I will be given (another) new name. It will be Shuhada'."