Riba (disambiguation)

Riba is an Arabic word meaning usury.

Riba or RIBA may also refer to:
 * Riba (surname)
 * La Riba, a municipality in Catalonia, north-eastern Spain
 * Royal Institute of British Architects
 * RIBA International Award
 * RIBA Journal
 * Recombinant ImmunoBlot Assay, a technique used in immunogenetics to detect specific proteins in a sample of tissue. It is also known as the Western Blot test