Is Hercule Poirot autistic?

I was going to see the same thing. Great minds and so on. 

Christie's Muss Marple certsonly wasn't autistic though. 

That's so great you're writing about this. I'm currently finishing a non-fiction book on late diagnosed autism, to be published in my native Nordics, where I (among other topics) go into Poirot's and Christie's neurodivergence. I'm not necessarily convinced she was autistic, even if she hated crowds and the gramophone :) But she would probably have been diagnosed something starting with dys- today, in light of the documentation of her poor hand-writing, peculiar difficulties with spelling and more. Poirot, on the other hand: I agree with JC Bernthal (the writer of the article Martyn linked to, for those who didn't open it) that he can clearly be read as autistic. And as a late diagnosed autistic and veteran Christie fan, I love that! I have collected many more clues of P's autism than what's listed in the (excellent) Bernthal article. "Hastings! I feel the dampness of the feet!". 

Some of Inspector Morse (over the TV series he seems to 'learn' teamwork, and become more endearing to others), parts of Rebus, the Bones lead character, some aspects of Kay Scarpetta, maybe even some of Frost, although this last one is possibly more a consequence of when they were written rather than autistic-type traits.

Well, 

Not directly. But, the character of Poirot was, by Christie's own admission, much influenced by Holmes, she being a great admirer of Doyle's fictional detective. 

And, it is well known that Holmes was based on a real person known to Doyle, Dr. Joseph Bell. He may have been autistic, although we'll probably never know. 

So maybe, the answer could be yes, indirectly?

if you can think of any others that you resonate ad see yourself in...? I love a list, I do.

Could there be a correlation between autistic people being more likely to be LGBT and vice versa? 

I think your question would be best answered by Colombo.  Need I say more.............."oh, just I last thing."

Holmes is widely read as autistic these days. Interestingly, he was loosely based on Conan Doyle's old teacher Dr Joseph Bell, who it's also speculated was autistic. 

Thank you for that. That's really helpful, I'll investigate.

Interesting perspective, even though I know very little about this - perhaps in terms of analytical skills the same could be true of Sherlock Holmes 

Very interesting question and post, even though I know very little about this - on reflection, aside from his being gay, I’ve often wondered if Irish writer Oscar Wilde was autistic as well and perhaps the same could be said about fellow Irish writer James Joyce - in terms of analytical skills, the same could be true of Sherlock Holmes  

From the books, not the shows, I would say the most openly expressed ND person could be the character who is a consultant that Miss Marple uses who shows up every now and then in her books. They have a steel trap memory, flat delivery, restless bad eye contact and other features right out of the DSM. 

I cannot remember this incidental character's name but when I read the books I never forgot him as he was so like myself, So vividly did he reflect me.

I have never, though, felt all that much kinship with Poirot. Can't say why.

Other literary and film characters that resonate:

Jeeves the butler in "Jeeves and Woster"

 Boo Radley in to "kill a mocking bird"

Mister Memory from the stage show scenes in Hitchcock's "the 39 steps"

James Stewart's character in "Rear Window"

the night man in Orwell's "A touch of Evil"

Virginia O'brien in the marx Bro's "The Big Store"

I remember David Suchet's Poirot getting annoyed at being called French; he's Walloon, French-Speaking Belgian.

Also, the eccentricity - and analytical skills - fit the description. Even pattern recognition. I remember an episode of 'One Foot in the Grave' where Victor and Margaret were watching a tape-recorded episode of Poirot; assuming that the killer's name was basil. (the victim held a piece of basil) Though the recording stopped; and went on beyond that to Jockey Wilson playing Darts.

Being a loner, as well.