List of highways numbered 503
The following highways are numbered 503:
 |
Canada[edit]
Alberta Highway 503
Manitoba Provincial Road 503
Newfoundland and Labrador Route 503- Ontario Highway 503 (former)
Costa Rica[edit]
India[edit]
Japan[edit]
United States[edit]
County Road 503 (Brevard County, Florida)
Maryland Route 503 (former)
County Route 503 (New Jersey)
Ohio State Route 503
Washington State Route 503
- Territories
| Preceded by 502 |
Lists of highways 503 |
Succeeded by 504 |
This article includes a list of roads, streets, highways, or other routes that are associated with the same title.
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