The former American Idol fifth-season finalist announced Monday on his band's website that his wife Deanna is pregnant with twins, who are due in November.
"Deanna and I are overjoyed about this double blessing," said Daughtry in a statement.
"Thank you for your expressions of love and support and for respecting for our privacy during this special time."
Since Deanna underwent a partial hysterectomy in 2006, the couple used intravenous fertilization and had their embryos transferred to a gestational surrogate for the pregnancy, according to the statement.
The couple, who wed in November 2000, are already the parents of 13-year-old daughter Hannah, from Deanna's previous marriage, and 11-year-old son Griffin.