Karl Friedrich Henckell (17 April 1864, Hanover – 30 July 1929, Lindau) was a German author, poet, and publisher.
Henckell studied at the universities of Berlin, Heidelberg, Munich, and Zurich.
He lived abroad, in Switzerland, in Zurich and much later Muri (Bern), in Italy (Milan), and in Belgium (Brussels), and was well acquainted with the modern literatures of Europe, on which he frequently lectured, besides giving readings from his own poems.
The composer Richard Strauss set nine of Henckell's poems to music, the first one in 1894, "Ruhe, meine Seele!"
This article about a poet from Germany is a stub.