Eduard Clemens Fechner (21 August 1799 – 7 February 1861) was a German portrait painter and an etcher.
Fechner was born at Gross Särchen, near Bad Muskau, and studied in 1814 at Dresden under Grassi and Retsch.
He worked some time for the Duke of Leuchtenberg, and visited Paris in 1826.
He excelled in painting portraits of ladies and children; he also executed eleven etchings in a spirited manner.
Fechner was the brother of experimental psychology pioneer and founder of psychophysics Gustav Fechner and of Clementine Wieck Fechner, who was the stepmother of Clara Schumann née Wieck, the famous pianist and composer, when Clementine became her father Friedrich Wieck's second wife.