Phu Pha Daeng Wildlife Sanctuary (Thai: เขตรักษาพันธุ์สัตว์ป่าภูผาแดง;RTGS: Khet Raksa Phan Satpa Phu Pha Daeng) is a wildlife sanctuary in Lom Sak District of Thailand's Phetchabun Province. The sanctuary covers an area of 235 square kilometres (91 sq mi) and was established in 1999.