Aim: To determine the association of arch form with the number, direction, unification and shape of palatal rugae. Materials and methods: The total sample consisted of 90 edentulous subjects comprising of 30 U–shaped, 30 V–shaped and 30 ovoid shaped arch forms of the age ranging from 45–65 years. Their maxillary casts were examined for the palatal rugae number, direction, unification and shape. Results: After analyzing the rugae patterns in three arch forms, some differences were observed. Conclusions: Palatal rugae revealed a specific pattern in direction and unification among three different arch forms, but rugae number and shape did not give significant results.