What is Another word for locksmith?

There isn't really a single perfect synonym for "locksmith," as it encompasses a specific set of skills and services. However, depending on the context, you could use:

General Alternatives:

* Key specialist

* Lock and key expert

* Security professional

* Lock and safe technician

* Security engineer

More Specific Alternatives:

* Safe cracker (if focusing on safes)

* Security consultant (if focusing on security advice)

* Automotive locksmith (if focusing on car locks)

* Residential locksmith (if focusing on home locks)

Ultimately, the best alternative will depend on the specific situation and what aspect of the locksmith's work you want to emphasize.