The Landquart-Davos G 2x2/2, also known as the Rhaetian Railway G 2x2/2, and, from 1910 to 1911, as the Rhaetian Railway G 2/3+2/2, was a two-member class of metre gauge Mallet-type steam locomotives manufactured by J. A. Maffei in Munich, Germany. Both locomotives in the class entered service in Switzerland in 1891. They were rebuilt in 1910–1911, but became surplus to requirements in 1920. They were then sold and sent to Brazil, where they continued to operate until about 1940.