Franz Sedlacek (21 January 1891 – 1945) was an Austrian painter who belonged to the tradition known as "New Objectivity" ("neue Sachlichkeit"), an artistic movement similar to Magical Realism.

At the end of the Second World War he "disappeared" as a soldier of the Wehrmacht near Toruń, Poland.

After serving in World War I,[2] he completed his studies and in 1921 began working at the Technical Museum of Vienna.

In 1925 he produced a number of watercolours for Claire Annabel Caroline Grant Duff's Book The Unicorn.

[3] In 1927, Sedlacek joined the Viennese Secession, an association of artists that was founded by Gustav Klimt and others in 1897.