| Bay Island | |
| Settlement Type: | Populated place |
| Pushpin Map: | Virginia#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the Commonwealth of Virginia |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Virginia |
| Subdivision Type2: | Independent city |
| Subdivision Name2: | Virginia Beach |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 36.9089°N -76.0489°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 23451 |
| Area Code: | 757 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
Bay Island is a two mile long island situated in the North Great Neck area of Virginia Beach, Virginia. The island is bordered by Long Creek to the north and Broad Bay to the south, both offshoots of the Lynnhaven River, and is connected to the mainland by the West Great Neck Bridge on the western side of the island. The island traditionally contains two residential neighborhoods: Broad Bay Colony on the western side of the island and Bay Island on the eastern side, although most residents just refer to the entire residential area as Bay Island. The two neighborhoods share a homeowners' association as well as several other community clubs, such as the Garden Club. Children in the neighborhood attend three schools depending on grade level: John B. Dey Elementary School, Great Neck Middle School, and Frank W. Cox High School. The island is susceptible to flooding, especially on the northern and western sides of the island. Due to this, even small hurricanes or tropical storms may cause the need for an entire evacuation of the island, as the roads on the western side flood, blocking the only exit from the island. This can happen even when the rest of Virginia Beach is not affected by a storm.