As others have said it is and it isn't. Park has a unique vision for story-telling and it really shows in this movie.
A girl in a radio factory has a nervous breakdown, concludes she's a cyborg with a dead battery, hears a voice tell her to open her skin, attach electrical cord, and plug herself into the wall outlet. Of course it knocks her out and shortly after she's committed to a mental hospital with other delusional people.
Some scenes are fantastically choreographed and shot sequences where she goes on a killing spree. Gun barrels sprout from her finger tips and her mouth becomes a spent shell-casing ejection port. In the process she guns down most of the doctors and staff.
But it's all an delusion, though it looks quite real.
She also becomes the love interest of a thief of sorts. A affable young man who many of the patients assume can cure them by transferring their worst traits to himself. By acting out their traits they become cured (at least in their minds) and he expends the 'bad energy.'
It has a happy ending of sorts. He helps the patients more than the doctors do and we assume the couple end up together, though that's left somewhat up in the air.
It is funny. It explores mental illness, delusion, and a humane attitude toward others illnesses. The action scenes (odd I know) are quite good and I'm still not sure how some of the effects were done. They are seamless.
It also has a happy ending of sorts.
Yadda yadda yadda <- this is my signature

Yeah, a black comedy sort ofit could be listed as a romantic comedy I guess, though it's a cut above the standard rom-com's that tend to come out of Hollywood
+Charos+
"I have often laughed at weaklings
who thought themselves good because
they had no claws."

You could consider it as sort of a romantic comedyon acid
+Charos+
"I have often laughed at weaklings
who thought themselves good because
they had no claws."

The answer depends on your definition of comedy, but yeah I think there is a good amount of comedy in this film. One thing what this film is not is though it is not a DARK or BLACK comedy as many people would assume simply from the name of the director. Actually I liked the light touch of this film. An enjoyable short sketch by Park between his more serious works. I can not wait for his next film about vampires!

It's less of a comedy. Not a lot of funny scenes. But definitely embedded on it was a love story. Well it wasn't that bad..cyborg girl was just looking for her purpose in life, just like most of us.

I watched it last night as a festival opening film to the HKIFF.
If you're a fan of Park or Rain, my suggestion is to avoid this film there are comedic moments in some scenes, as well as some surreal violence and mild gore, along with attempts of romance but the fact is, and I guess you can be the best judge, this film looks more like a compilation of deleted scenes that shouldn't have been on the final print.
There is little internal logic to justify this film's 1/2 baked surrealist plot, and the story is so thin that it's like a one-line premise turned into multiple scenes that attempt to be funny and surreal, all tied up with voice-over narration
my suggestion, watch it as inflight entertainment i never thought I would say this, as all films should be rewarded with support and $$ return to encourage more good films to be made but this one just doesn't deserve any of that - it looks like someone pointed a gun to the director and forced him to make a film he neither cares about, nor did he even show up during script-meetings or, maybe they didn't have any script-meetings.

yes
i usually love dark comedies and bizarre and macabre humor
for some reason, i didnt find this that way, same with Save the Green Planet (which was sillier), i didnt laugh at all at it, something to do with the tone to me, it doesent feel like black comedy, but everyone feels things differently i suppose

Mr. Veageance was nowhere near the comedy level of Oldboy or Lady Vegeance. Dark Comedys are harder to catch, most people dont like them. Its like laughing at something thats so bizzare or macabre that you really have no other reaction for it but laughter.

ha, i see your point
its like shakespeare's comedies
but i didnt really laugh at most of it because everything in it leads to such sad and tragic stuff
the only part that my friend and i laughed hard at was when he makes to punch the girl to make her cry
it was silly
i loved the film though, in case no one realized
it is beautiful!

Sympathy for Mr Vengeance is a comedy. There are smaller jokes in his other movies but Sympathy is the only comedy in terms of structure. By structure I mean the entire plot setup. The misunderstandings about motives, actions and potential consequences are all deeply comic - even if they're played "dead" straight.
The monkeys all thought they were alone, all 6 billion of them

exactly
i thought he had a comedic element to all his movies
then i saw sympathy for mr vengeance

i agree about 'save the green planet'. watched it few days back. they could have done without the 'aliens and blowing off the planet'. but you don't get this feeling with the promos and trailers of 'i am cyborg but that's ok'.
but as you said, u can't tell anything from the cleverly tuned trailers these days. besides, it's park. you never know.

yes, i learned that from Save the Green Planet!
described as a "dark comedy" and advertised as being really funny and crazy
i dont think I laughed that entire movie
i suppose it was a dark comedy but to me it was so incredibly depressing and beep up, and when the SPOILER SPOILER SPOILER SPOILER aliens were real i found that ending stupid and silly and not funny
i dont know, perhaps its just me (although I have laughed at some pretty beep up things, i love the blackest of comedy, but something about this just, didnt feel like I was supposed to be laughing)
so who knows really with the way things look (although the shots revealed inthe trailer look incredibly done)

It depends on your definition of comedy, of course. I think it is, but if you know what a "biedermeier" is, I would imagine it would be like one. Hmmm but how come it has no sci-fi to it, hence the thought of herself being a cyborg. I mean, perhaps the mental institution is right for her.
However, the only answer is, go and watch the movie

you can just wait for the dvd release and order it online.

yeah, i am desperate for its release myself. but i am based in uk, and i am not sure about its release here.

I don't think so.
I heard Rain talking about the movie on a radio show couple days ago, he did not specifically categorized the movie as a 'romantic comedy.' He explained what kind of movie it is and that made me even more confusing. (he even mentioned some "horror.")
So, I guess we just need to wait until the movie comes out and watch it for ourselves.

She is not having mental breakdown just like that
she has mental breakdown becouse she stopped eating..
(she have "empty battery" problem through the whole movie)
and the whole movie is modern day battle tale against Anorexia..

may be a comedy that would make u cry at the end

It does seem like a comedy. a girl working in a factory line making radios has a mental breakdown and imagiend herself being a cyborg and is institunialized. There, she meets another loonie who falls in love with her. That's what i took form the trailer.
"There is no Seyser Koze!!!" Gabriel Byrne blunder while filming The Usual Suspects.

and even that had a lot of humor in it

sympathy for mr. vengeance
i found so incredibly depressing
but you are right he does usually have a sense of humor in all his other movies, and even in like, 2 moments in that one.

I would think that it would be a dark comedy, given that the movies i have seen of his all have a dark comic twist to them.

Park said it was a romantic comedy, but considering that it's PARK, we can be pretty sure that it's not going to be 'just another rom-com.'