Ludwig Zinovievich Slonimsky (Polish: Leonid Ludwik Słonimski, Russian: Леонид-Людвиг Зиновьевич Слонимский, 1 November 1849[1] —1918) was a Warsaw-born Jewish Russian journalist, publicist, economist and lawyer, the son of Hebrew scientist and publisher Hayyim Selig Slonimski.

[2] A Kiev University alumnus, Slonimsky started publishing articles on law and jurisprudence in Sudebny Vestnik (Court Herald) in Saint Petersburg in 1872.

After a short stint with the Slovo magazine, in 1881 he joined the newspaper Poryadok (Order), then succeeded Valentin Korsh as its Foreign Policies editor.

In late 1882 Slonimsky became a member of the Severny Vestnik staff where his essays on economics soon started to appear regularly; in 1883 he became the head of this magazine's Foreign Review section.

He published numerous historical essays too, including those on Napoleon I, Oliver Cromwell, Alexander I and Nicholas I.