Ruth Eisemann-Schier (born November 8, 1942)[1][2] is a Honduran criminal who was the first woman to appear on the FBI's Ten Most Wanted list.

Schier was born in Honduras, the daughter of Austrian-Jewish refugees living there after escaping Nazi persecution.

[4] Schier was added to the list in 1968, for participating in the kidnapping-for-ransom of land heiress Barbara Jane Mackle in Decatur, Georgia in a plan concocted by her boyfriend, Krist.

[2][5] Schier was extradited from Oklahoma to Georgia to face trial[6] where she pleaded guilty and was sentenced to seven years in prison.

[7] While Schier was in prison, Gene Miller, in collaboration with Mackle, wrote about the crime in 83 Hours Till Dawn.