When I had one of my first interviews out of college, I stuttered a ton. Really bad. And the interviewer said they couldn't hire me because they didn't think I'd be able to communicate effectively. THAT'S ILLEGAL, BTW. They can't turn you away from a job due to a disabiltiy unless the disability literally makes you unable to perform the work. And f\*\*\* that guy anyway. You don't want to work for a place like that. But that's also literally the only time that has happened in my 23 years of interviewing for jobs. Everyone else has been kind and understanding, and I've gotten TONS of job offers. I definitely tell people ahead of time. If you're talking via email first, mention it before you talk to anyone. >Just so you know, I stutter. It's worse when I'm nervous (like in interviews) but not as bad day-to-day, and won't impact my ability to do the job. If you have to cold call or speak in person (which is rough, I know), then mention it as soon as you can. >Hi, I'm here/calling about the job opening? Just so you know, I stutter, so bear with me. :) My name is... Just \*knowing\* what's going on when you start to stutter, will help other people understand and deal with it better. Most people have no experience with stuttering, and so don't even really understand what's happening. Also, if you know that they know, then you won't be as nervous, because you know they'll be expecting it.