J." Eckstein (May 29, 1923 - April 13, 2009) was a Minnesota politician and a former member of the Minnesota House of Representatives from southwestern Minnesota.
First elected in 1970, Eckstein was re-elected in 1972, 1974 and 1976.
He represented the old District 17B and, later, 28B, which included all or portions of Brown, Cottonwood and Nicollet counties, changing somewhat through redistricting in 1970.