Erling Sven Lorentzen (born 28 January 1923) is a Norwegian-Brazilian shipowner and industrialist.
He founded Aracruz Celulose in 1968.
He is the widower of Princess Ragnhild, the eldest child of King Olav V of Norway.
In addition to being a Norwegian princess, his wife was in the line of succession to the British throne and occupied the 18th place at the time of her birth.
Erling Lorentzen is a member of the Lorentzen family of shipping magnates.