Sunnyside is the name of a neighborhood in the Mid-Island region of the New York City borough of Staten Island.

Two large city parks—Silver Lake Park and Clove Lakes Park—form the eastern and western boundaries, respectively, of Sunnyside, which is named for a boarding house that was established there in 1889; the vicinity had previously been known as Clovenia, owing to its location in what was then referred to as the Clove Valley, whose name survives in Clove Road, which runs from West Brighton to Grasmere, and is one of the neighborhood's principal thoroughfares. Clove Road forms the northern boundary of Sunnyside, separating it from the community of Grymes Hill.

Prior to the advent of cable television service, Sunnyside was noted for having the worst television reception on Staten Island, resulting from its being hemmed in by several hills, including Grymes Hill, Emerson Hill and Castleton Hill, the latter separating Sunnyside from neighboring Castleton Corners.

Sunnyside was once the home of a campus of the College of Staten Island; located at the foot of Emerson Hill, in 1993 this campus was moved to the grounds of the former Willowbrook State School, and an advanced-placement high school, the Michael Petrides Center, took its place. This center is also an evacuation site for residents during floods or other emergencies.

A large percentage of Sunnyside's residents are civil service workers, this demographic trait being typical of many Mid-Island neighborhoods.

Annadale  Arden Heights  Arrochar  Bay Terrace  Bloomfield  Brighton Heights  Bulls Head  Castleton  Castleton Corners  Charleston  Clifton  Concord  Dongan Hills  East Shore  Egbertville  Elm Park  Eltingville  Emerson Hill  Farm Colony  Fort Wadsworth  Fresh Kills  Graniteville  Grant City  Grasmere  Great Kills  Greenridge  Grymes Hill  Hamilton Park  Heartland Village  Hoffman Island  Howland Hook  Huguenot  Isle of Meadows  Lighthouse Hill  Livingston  Manor Heights  Mariners Harbor  Meiers Corners  Mid-Island  Midland Beach  New Brighton  New Dorp  New Dorp Beach  New Springville  North Shore  Oakwood  Ocean Breeze  Old Town  Pleasant Plains  Port Ivory  Port Richmond  Prall's Island  Prince's Bay  Randall Manor  Richmondtown  Richmond Valley  Rosebank  Rossville  St. George  Sandy Ground  Shooters Island  Shore Acres  Silver Lake  Snug Harbor  South Beach  South Shore  Spanish Camp  Stapleton  Stapleton Heights  Sunnyside  Swinburne Island  Todt Hill  Tompkinsville  Tottenville  Tottenville Beach  Travis  Ward Hill  Westerleigh  West New Brighton  West Shore  Willowbrook  Woodrow

Annadale - Arden Heights - Arrochar - Bay Terrace - Bloomfield - Bulls Head - Castleton Corners - Charleston - Chelsea - Clifton - Concord - Dongan Hills - Egbertville - Elm Park - Eltingville - Emerson Hill - Fort Wadsworth - Graniteville - Grant City - Grasmere - Great Kills - Greenridge - Grymes Hill - Heartland Village - Huguenot - Lighthouse Hill - Livingston - Manor Heights - Mariners Harbor - Meiers Corners - Midland Beach - New Brighton - New Dorp - New Springville - Oakwood - Ocean Breeze - Old Town - Pleasant Plains - Port Richmond - Prince's Bay - Randall Manor - Richmondtown - Richmond Valley - Rosebank - Rossville - Rudolph Lake - Sandy Ground - Shore Acres - Silver Lake - South Beach - Stapleton - Stapleton Heights - St. George - Sunnyside - Todt Hill - Tompkinsville - Tottenville - Tottenville Beach - Travis - Ward Hill - Westerleigh - West New Brighton - Willowbrook - Woodland Beach - Woodrow -