Mountainside may refer to:
*the side of a
mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually highe ...
*
Mountainside, New Jersey
Mountainside is a borough in Union County, New Jersey, United States. The borough is located on a ridge in northern- central New Jersey, within the Raritan Valley and Rahway Valley regions in the New York metropolitan area. As of the 2010 Un ...
, a borough
*Mountainside, a community in the city of
Burlington, Ontario, Canada
*
Mountainside Hospital
Hackensack Meridian Health Mountainside, also known as Mountainside Hospital, is an acute-care hospital located in Montclair, New Jersey, United States. The hospital has 396 beds and serves Northeastern Essex County, New Jersey, Essex County. A pa ...
, Glen Ridge, New Jersey
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