The Eastside is the collective term for the eastern suburbs of Seattle, Washington, United States. The name derives from the fact that these communities lie east of Seattle.
There is no formal definition of the Eastside and the exact cities and towns that comprise the Eastside are a matter of dispute. The following cities are included in most definitions: Bellevue, Issaquah, Kirkland, Newcastle, Mercer Island and Redmond. Sammamish is most often grouped with these core cities, so that all of the cities and towns between Lake Washington and Lake Sammamish, as well as the Sammamish Plateau, are included within the Eastside.
The incorporated neighborhoods west of Bellevue, collectively known as the Gold Coast, are usually considered part of the Eastside. These areas include Beaux Arts Village, Clyde Hill, Hunts Point, Medina, and Yarrow Point.
The Northshore cities of Kenmore, Bothell, and Woodinville may be considered part of the Eastside, as each city contains portions that are east of the lake and south of its northernmost tip. Similarly, on the southeast tip of Lake Washington, Renton may also be included.
The most expansive definitions of the Eastside can include one or more of the incorporated cities in the Snoqualmie Valley, including Duvall, Carnation, Fall City, North Bend, and Snoqualmie.
In politics, the area is sometimes referred to as the "suburban crescent".