An amyloid is any of certain insoluble fibrous protein aggregates.

Amyloid may also refer to:

Amyloid (mycology), a chemical reaction used in characterization of fungi Amyloid (journal), the Amyloid: the Journal of Protein Folding Disorders peer-reviewed scientific journal

See also Active-matrix organic light-emitting diode (AMOLED), a display technology Amyl (disambiguation)