Eduard Gustav von Toll was a Baltic German geologist and Arctic explorer in Russian service. Often referred to as Baron von Toll or as Eduard v. Toll, in Russia he is known as Eduard Vasiliyevich Toll (Russian: Эдуард Васильевич Толль). Eduard Toll was born on 14 March [O.S. 2 March] 1858, in Reval (now Tallinn, Estonia) and he died in 1902 in an unknown location in the Arctic Ocean. He belonged to a noble family of Baltic German origin and was married to Baroness Emmy von Toll.
Eduard Toll graduated from the University of Dorpat (Tartu) as a zoologist in 1882. Already while he was a student he traveled to the Mediterranean and researched the fauna, flora and geology of Algeria and the Balearic Islands.