Dahisar (Marathi pronunciation: [d̪əɦisəɾ]) is the northernmost suburb (and railway station) of Mumbai.

Not to be confused with Dahisar Mori in Navi Mumbai.

On the Mumbai Suburban Railway (which is part of the Indian Western Railway line), that runs from Churchgate to Virar, Dahisar is immediately north and next to the populous suburb of Borivali, which has a train station of the same name.

After Dahisar, when travelling northwards on the Churchgate - Virar Western Railway line the immediate next railway station or stop is Mira Road station.

The word is most probably coming from the ancient Prakrit language of which a Sanskritized version would be Dadhīśvaraḥ (=IAST, Dadhishvar).