List of highways numbered 503
The following highways are numbered 503:
Canada
Alberta Highway 503
Manitoba Provincial Road 503
Newfoundland and Labrador Route 503- Ontario Highway 503 (former)
Costa Rica
India
Japan
United States
County Road 503 (Brevard County, Florida)
Maryland Route 503 (former)
County Route 503 (New Jersey)
Ohio State Route 503
Washington State Route 503
- Territories
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| 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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