- Macklin Road, Salisbury
- Mallard Close, Harnham
- Malthouse Lane, Salisbury
- Manning Close, Salisbury
- Manor Farm Road, Milford
- Manor Road, Salisbury
- Maplecroft, Salisbury and Maple Crescent, Wilton
- Marina Road, Salisbury
- Market Place and Market Walk, Salisbury
- Market Place, Wilton
- Marlborough Road, Salisbury
- Marsh Lane, Salisbury
- Martins Close, Salisbury
- Maryland Close, Salisbury
- Mayfair Road, Laverstock
- Meadow Road, Salisbury
- Melemonger Street, Salisbury
- Melvin Close, Laverstock
- Merrifield Road, Ford
- Methuen Drive, Salisbury
- Meyrick Avenue, Salisbury
- Middle Street, Harnham
- Middleton Road, Salisbury
- Milford Hill, Salisbury
- Milford Hollow, Milford
- Milford Manor Gardens, Milford
- Milford Mill Road, Milford
- Milford Park, Milford
- Milford Street, Salisbury
- Milford Trading Estate, Salisbury
- Mill Lane and Millers Close, Stratford
- Mill Road, Salisbury
- Mill Stream Approach, Salisbury
- Milton Road, Salisbury
- The longest posts
- Minster Street, Salisbury and Minster Street, Wilton
- Misery Hill, Codford
- Mitchell Road, Salisbury
- Mitre Corner, Salisbury
- Mizmaze Hill, Salisbury
- Moberly Road, Salisbury
- Montgomery Gardens, Salisbury
- Munks Close, Harnham
- Mutton Bridge, Milford
- Myrrfield Road, Salisbury