Sandra H. "Sandy" Greiner (born October 26, 1945) is Iowa state senator for District 45.

Her political experience includes serving with the Washington County Republican Central Committee.

Greiner was re-elected in 2006 with 5,756 votes (55%), defeating Democratic opponent Mark Nolte.

[5] In 2011, she expressed very strong reservations about a proposal to establish a policy institute at Iowa State University named for a sitting elected official, U.S.

Second, she objected that it would confer undue political advantage to the elected official for whom it was named.