Bayside (Irish: Cois Bá)[1] is a small residential suburb on the Northside of Dublin, Ireland, purpose-built from 1967 on lands previously part of Kilbarrack.

[2] It has a planned central service area with retail facilities and lies inshore of Bull Island.

It absorbed a neighbouring development, Sutton Park, also on Kilbarrack lands adjacent to Baldoyle.

Bayside is located beside the sea, lying inshore of North Bull Island and Dublin Bay, and about 10 km north-east of the city centre.

[6] Bayside was a planned development, built in the mid-20th century, on part of the lands of the large old district of Kilbarrack, whose largest settlement lay near what is now the centre of the new area.

[citation needed] In 2017, celebrations, organised by the Bayside Community Association, were held for the suburb's fiftieth year.