| Business | Phone |
| A P Locksmith & Security Elkridge 21075 | (410) 964-4360 |
| A-Allaround Lock & Key Elkridge 21075 | (410) 379-1388 |
| All-State Lock & Key 7901 Butterfield Dr, Elkridge 21075 | (410) 796-0183 |
| AM-PM Key & Security Bros 6095 Marshalee Dr Ste 300, Elkridge 21075 | (443) 482-5301 |