Alz or ALZ may refer to:
Alzheimer's disease (shorthand "ALZ" used by Alzheimer's Association) Alz, a river in Bavaria, Germany ALZip, a computer archive and compression utility Alitak Seaplane Base, a seaplane base with the IATA code ALZ ALZ (steelworks), Belgian steelworks Alur language (ISO 639-3 language code alz) The Armée de Liberation de Zgharta (ALZ), Lebanese political party and militia