Kurt Camillo Loos (25 January 1859 – 27 July 1933) was a German forester and ornithologist active in Bohemia.
Loos was a founder of bird-ringing in Bohemia and was involved in founding a ringing station and a scientific organization in Prague called Lotos which also produced a periodical of the same name.
When the family moved to Arnoldsgrün and he went to the secondary school at Plauen where he was a contemporary of Franz Helm with whom he spent time outdoors.
He then studied natural sciences at the Leipzig University and worked as a forest officer in the Karlsfeld district.
He also observed individual pairs of birds over a long duration and produced a monograph on the life of the black woodpecker in 1910 and on the eagle owl in Bohemia (1906).