Cliffside is a neighbourhood in the Community of Scarborough, Ontario, Canada, located along the Scarborough Bluffs.

Its boundaries are Kennedy Road to the west (where Kingston and Danforth Road merge), St. Clair Avenue East to the north, Brimley Road to the east, and the Bluffs on the lakeshore to the south.

It is widely believed that the Cliffside neighbourhood gained it’s namesake from the Cliffside Golf Course that covered much of the now-residential area south of Kingston Road in the boundaries mentioned above.

Cliffside was named for the Scarborough Bluffs, which bordered the south side of the Golf Course.