The couple got married in December last year, but decided to separate within seven months of marriage.
Confirming the news of their split, Cyrus' representative told "US magazine" that it was a "mutual decision".
"Liam and Miley have agreed to separate at this time. Ever-evolving, changing as partners and individuals, they have decided this is what's best while they both focus on themselves and careers. They still remain dedicated parents to all of their animals they share while lovingly taking this time apart. Please respect their process and privacy," the representative added, according to a "Daily Mail Australia" report.