Otto Altenkirch (2 January 1875, Ziesar – 20 July 1945, Siebenlehn) was a German Impressionist painter and set designer.

He was the sixth child born to Johann Christian Friedrich Altenkirch, a Master saddler, and his wife Dorothea Wilhelmine Auguste née Müller.

[1] In 1889, after completing primary school in Zeisar, he went to Berlin to serve a four-year apprenticeship as a decorative painter.

His work there included sets for Der Ring des Nibelungen in 1913, the 100th anniversary of the birth of Richard Wagner.

A few weeks before his death, he created one of his largest paintings, depicting the garden of the Saint Romanus Country Inn, near his home.