The navicular bone (Latin: os naviculare) is a boat-shaped bone located on the top and inner side of the foot. It articulates with five bones within the tarsus - with the talus proximally, with the three cuneiform bones distally, and with the cuboid bone laterally.
The posterior side of the navicular bone is concave and has an articular surface, which articulates with the head of the talus.
The anterior side of the navicular bone is convex and has three articular surfaces for articulation with the three cuneiform bones.
The only muscle that attaches to the navicular bone is the tibialis posterior.
Some individuals may have an accessory navicular bone in the foot.