Thak is a villain from the Conan story Rogues in the House by Robert E. Howard.
Thak was one of the man-apes of the Vilayet Sea region, specifically the eastern part ofZamora. Thak was captured and kept by Nabonidus as a servant and a pet. He was highly devious and possessed near-human intelligence. Eventually, Thak grew jealous of, and rebellious towards his master, and took control of the system of traps that Nabonidus had installed in his house; using them to eliminate a party of nationalistic enemies of Nabonidus who had come to assassinate him.