The Sabah section of the Federal Route 1, Asian Highway Route AH150, is a 428-km federal highway in Sabah, Malaysia, which is also a component of the larger Pan Borneo Highway network.

However, most maps still use the older route numbering scheme by referring to the northern section as A1 and the southern section as A2.

Generally, the highway runs along the west coast of Sabah.

The highway continues as the Federal Route 1 (Sarawak) at the Sabah-Sarawak border.

One interesting feature about this federal highway is motorists crossing the Sabah-Sarawak border through the Federal Route 1 must pass through a customs and immigration checkpoint at Sindumin, even though the two neighbouring states are part of the federation of Malaysia.