His grandfather was the Italian sculptor Constantino Nivola.
Alessandro is married to actress Emily Mortimer. The couple has a son, born in 2003.
He dated the actress Rachel Weisz.
He is 5' 9" (1.75 m) tall.
Alessandro Nivola was one of the faces for the GAP's 2002 Ads campaign For Every Generation.
He has a brother, Adrian.