“Does any State have/issue concealed knife permits?”
I do not know of any dedicated concealed knife permits, but many states’ concealed weapon permits include edged weapons.
Knives are arms protected by the second amendment.
http://gunwatch.blogspot.com/2013/07/txkniferights-issues-alert-about.html
Thanks - I can just about envision some States including edged weapons, but can’t imagine a permit specifically for them. I wish more States had reciprocity - relatives in Ohio and S. Carolina and go all around them but in them (legally).