Cynthia Thielen

Cynthia Henry Thielen (born September 22, 1933) is a member of the Hawaii House of Representatives representing District 50, the Kailua and Kaneohe Bay areas of Oahu County. She is a Republican and has served in the state House of Representatives since 1990. She served as minority floor leader from 1992 to 1997 and is the current assistant minority leader.
She was the Republican nominee for United States Senate in 2006, challenging incumbent Democrat Daniel Akaka. She lost to Akaka, 62% to 38%, in the general election.

Thielen was born in Los Angeles, California. She attended Stanford University, Case Western Reserve University, and the University of Hawaii, graduating with a degree in law. She is a founding member of the Law Review.