August Theodoor Cornelis ‘Guus’ Kiehl (1854-1938) was a Dutch comedian, actor, stage director and librettist. Son of actors H.

G. Kiehl and Theodora Sophie Sablairolles, both working at the Royal Schouwburg in The Hague, August’s theatre career started there when he was in his early 20s. After the company disbanded, he went to Amsterdam and joined the company of Prot and Kistemaker.