Helene "Leen" Kullman (31 January 1920 – 6 March 1943 or 1978) was an Estonian agent of Soviet military intelligence in the Baltic Fleet during World War II.

She was evacuated from the city on 28 August 1941 with her twin sister Anna to a collective farm in the Chelyabinsk Oblast of Russia.

After the creation of the 7th Estonian Division in December 1941 she soon joined in 1942 and was assigned to a medical battalion as a nurse until she was transferred to the intelligence directorate in April 1942.

In January 1943, she was arrested by the local Gestapo and subsequently shot by a prison guard after she spat in his face according to Soviet sources.

[3] In 2000, the Estonian newspaper Postimees reported that Helene may have in fact cooperated with her captors and turned double-agent, continuing her radio transmissions, and then after the war relocated to West Germany under a new identity where she lived until 1978.