Manfred Ohrenstein (born August 5, 1925) is a lawyer and Of Counsel to the New York law firm of Ruskin Moscou Faltischek, P.C. He is a former member of the New York State Senate. A Democrat, he represented Manhattan from 1961 until 1994. From 1975 until 1994, he served as the New York State Senate Minority Leader. He is married to Dr. Marilyn Bacher and has two children, Nancy and David and four grandchildren.