Dr. Robert Soblen (born Ruvelis Sobolevicius, also known as Roman Well; November 7, 1900 – September 11, 1962), was a prominent member of the pro-Trotsky Left Opposition in Germany in the 1930s. He moved to the United States in 1941 with his brother Jack Soble, and was arrested in 1960 as a Soviet spy. Convicted and sentenced to life in prison, he fled the U.S. while on bail and sought asylum first in Israel, then Britain. He committed suicide by overdosing on barbiturates when his last appeal for asylum in Britain was denied.