Raia, RAIA, or RaiA may refer to:A raia or la raia, alternative names for the Portugal–Spain border in other languages Raia, alternative spelling of Raja, a genus of rays in the family Rajidae Raia, alternative spelling of Raya, a subdivision in some parts of the Ottoman Empire Raia, Goa, a small village in Goa, India Kamen Rider Raia, a character from Kamen Rider Ryuki Raia (surname) Royal Australian Institute of Architects (RAIA), a professional body for architects in Australia Ribosome-associated inhibitor A, a hibernation factor protein