We report Nguyen's fanged frog (Limnonectes nguyenorum) for the first time from Yen Bai Province in northwestern Vietnam. Specimens were collected in May 2017 and June 2019 from Mu Cang Chai Species and Habitat Conservation Area, Mu Cang Chai District, Yen Bai Province and identified based on morphological data. Our record extends the known elevation range of the species (up to 1763 m vs. 1000 m in first records) and brings the number of Limnonectes species recorded from Yen Bai Province to two and is the first record of Limnonectes nguyenorum from Mu Cang Chai Species and Habitat Conservation Area. | Limnonectes nguyenorum Mcleod Kurlbaum Hoang 2015 Anura Dicroglossidae a new frog record from Yen Bai province northwestern Vietnam
