Andreas Achenbach (29 September 1815 – 1 April 1910) was a German landscape and seascape painter in the Romantic style.

There, in 1827, he began his artistic education in earnest, attending the Kunstakademie Düsseldorf, where he studied with Friedrich Wilhelm Schadow and Heinrich Christoph Kolbe.

[5]He then took a study trip to the Netherlands and had his first real success in 1836, at an exhibition in Cologne, where one of his paintings was purchased by the Governor of Rhine Province, Prince Frederick.

After a tour of Bavaria and Tyrolia, he settled in Frankfurt and, with the assistance of Alfred Rethel, opened a studio at the Städelsche Kunstinstitut.

He was one of the founding members of an art association known as "Malkasten" (The Paint Box) and helped them acquire the former estate of the Jacobi family in Pempelfort, which was turned into the "Malkastenpark"; now a National Monument.

He took very few students other than his brother, notably Albert Flamm, Marcus Larson, Apollinary Goravsky and William Stanley Haseltine.