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 (country subdivision), 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
 * Royal Australian Institute of Architects (RAIA), a professional body for architects in Australia