Alexander Eckener (21 August 1870, Flensburg – 26 May 1944, Aalen) was a German painter and graphic artist.
His father, Johann Christoph Eckener (1824–1880) was a cigar manufacturer, and his mother, Anna Maria Elisabeth Lange (1832–1893), was the daughter of a shoemaker.
His older brother, Hugo Eckener, commanded the airship Graf Zeppelin on its first flight around the world.
There, he was a master student of Leopold Graf von Kalckreuth, who introduced him to the art of etching; another genre in which he became proficient.
The Eckener-Schule RBZ [de] (regional vocational training center) in Flensburg is named after him and his brother, Hugo.