Two, possibly three (that I know of!) - one diagnosed, two not.
A woman I know, who I don't see very often anymore, has a son with AS who is a few years younger than me; I've never really interacted with him.
When I started learning about AS I started wondering if my best friend from when I was thirteen had it as well; then she started learning about AS, and started suspecting the same thing.
And I knew a kid in elementary school, who I felt a strange kinship with without knowing why, who was socially awkward, brilliant, always picked on, and obsessed with the Revolutionary War. Not exactly exhaustive diagnostic criteria
, but I wouldn't be at all surprised if he turned out to have AS.
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"I don't even know how to explain it, but this is not my dimension, and my mind is never at peace; it's always somewhere else." - Josh Groban, Alla Luce Del Sole