Is cranial bones a flat bone?

Yes, some of the cranial bones are flat bones.

The skull is composed of two sets of bones: the cranial bones and the facial bones. The cranial bones form the upper part and back of the skull and protect the brain. They include eight flat bones: the frontal bone, two parietal bones, two temporal bones, the occipital bone, the sphenoid bone, and the ethmoid bone.

The facial bones form the lower part and front of the skull and protect the facial structures. They include 14 bones: two nasal bones, two maxillae, two zygomatic bones, two palatine bones, two lacrimal bones, the vomer bone, and the mandible.