I typically tick any box that says I have a disability, ask for extra time for my stutter, or if not an idea of the interview questions or topics beforehand.  And I additionally say at the start of the interview, "Just before we start, it's helpful for me to let you know upfront that I have a stutter. It doesn't mean that I'm nervous or unsure about what I'm saying. It's just the way I speak " I do this because a lot of the time, people associate stuttering with nervousness and other baggage. I don't want them to think that, so I simply tell them that it's not the case (even though it might be 🤣 but it's none of their business).  As other people have said, if your employer knows you have a stutter and rejects you because of it, it's likely they're an arsehole. I work in financial services and I know of some very high-up people in various firms who have quite noticeable stutters (moderate to severe in some cases) and everyone thinks it's epic that someone can have such pronounced speech issues and yet achieve what they have.