Federal Route 22, Asian Highway Route AH150 (formerly Federal Route A4), is a 310-kilometre (193 mi) [3] federal highway in Sabah, Malaysia, which is also a component of the larger Pan Borneo Highway network.

The section running from Tamparuli to Ranau, which is known as Tamparuli-Ranau Highway, crosses the Crocker Range just to the south of Mount Kinabalu.

The construction of the Federal Route 22 began in 1968 as a joint project between the Malaysian federal government with the government of Australia, known as the "Malaysian-Australian Road Project" (MARP).

[1] Meanwhile, the final section of the FT22 highway from Ranau to Tamparuli was constructed right after the Sandakan-Ranau section was opened to motorists.

[5][2] The highway was coded as A4 according to the old numbering scheme,[5] but was later changed to FT22 in 1996 to standardise the route numbering system with Peninsular Malaysia.