Karahayıt Red Water is a natural thermal spring located in the Karahayıt neighborhood of Pamukkale, Denizli, Turkey. The red color of the water comes from its high iron and mineral content.
With a temperature of approximately 55–60°C (131–140°F), this thermal water is commonly preferred for rheumatic diseases, skin conditions, and musculoskeletal disorders. Over time, it has formed striking red travertine formations, giving the area a unique and eye-catching appearance. It is located very close to the Pamukkale Travertines.