Ralph Rosenberg (born 7 October 1949) is an American politician.
He was educated at Bowen High School, and graduated from the University of Illinois in 1972, then completed legal studies at Drake Law School in 1974.
He won his first full term in 1982, and remained in office as the legislator from District 73 between 1983 and 1991.
Rosenberg subsequently served on the Iowa Senate, elected from District 37.
In the midst of his single term as state senator, Rosenberg was redistricted to District 31.