Wilhelm Friedrich von Gleichen-Rußwurm (1717–1783), Stablemaster of the Margrave of Bayreuth, was a German biologist.
In 1778 he developed a process of staining micro-organisms with indigo and carmine (Abhandlung über die Saamen - und Infusionsthierchen, und über die Erzeugung, nebst mikroskopischen Beobachtungen des Saamens der Thiere in verschiedenen Infusionen - Treatise on seed and infusoria, and their production, along with microscopic observations of the semen of animals in different suspensions).
[1] The fern genus Gleichenia was named in his honour.