Lilia Estrin Dallin (1898–1981) (aka Lola Estrin, Paulsen, Lilya Ginzberg) was a prominent member of Trotsky's Paris organization in the 1930s, the wife of the Menshevik David Dallin, and has been suspected of being an NKVD asset because of her association with NKVD agent Mark Zborowski.
After Lev Sedov died in a Paris hospital under mysterious circumstances in March 1938, his mistress accused Lilia of being an NKVD agent and causing his death.
After moving to the United States, Lilia married David Dallin, a Menshevik and Russian historian.
Lilia appeared in March 1956 before a Senate Subcommittee to publicly denounce Zborowski and to describe her role in the Trotskyist faction.
She is named in decrypts from May to August 1944, with regard to her involvement in the Victor Kravchenko defection, and a reading of these documents clearly indicates that she was not a Soviet agent.