Eee-kay-yah here in Germany.

I KE A

Ai-kee-yah

The only correct pronuncation isn‘t even an option, lol. In the english pronuncation of letters, it‘s E-KA-YA.
That‘s how it is pronounced in Sweden and also in Germany. Which means the user residentgrigo is wrong, the middle is certainly not pronounced „kay“.

Everyone who pronounces the „I“ like „eye“ should be whipped, tbh.

The only correct pronuncation isn‘t even an option, lol. In the english pronuncation of letters, it‘s E-KA-YA.
That‘s how it is pronounced in Sweden and also in Germany. Which means the user residentgrigo is wrong, the middle is certainly not pronounced „kay“.

Everyone who pronounces the „I“ like „eye“ should be whipped, tbh.

5/7 troll Lemon Ice. Ruined it with a double-post.

I was amazed at first that we are actually polling this, but it's actually quite interesting to see.
Almost all monolingual English speakers will choose an "Ai" (as in "eye" ) pronunciation, but likely everyone else will choose an "Ee" (as in "eh", "e" ) pronunciation.

There are a hundred different colloquial variations with each language; some segments are changed or accented to be easier to pronounce, but only really in English is the "I" accented.

English examples:
https://www.youtube.com/user/IKEA/videos
https://www.youtube.com/watch?v=YC6WiOmcPSs
https://www.youtube.com/watch?v=tkfq__rdoD0&t=7

German examples:
https://www.youtube.com/watch?v=_43dHWjblK4&t=5s
https://www.youtube.com/watch?v=UTfPMQKM7Os

Japanese examples:
https://www.youtube.com/watch?v=pISul048gKI
https://www.youtube.com/watch?v=M5IYinwxoE8

Korean examples:
https://www.youtube.com/watch?v=LGhG03NFMt0
https://www.youtube.com/watch?v=vrGsAWg8K-c&t=18s

Mandarin examples:
https://www.youtube.com/watch?v=TYlintRAXAQ
https://www.youtube.com/watch?v=guCCNM3VpR4&t=3s

Portuguese examples:
https://www.youtube.com/watch?v=jEIkobLmhmY
https://www.youtube.com/watch?v=TyZDX4SDmpU&t=26s

Spanish examples:
https://www.youtube.com/watch?v=gqHGEaAk8M0
https://www.youtube.com/watch?v=A5hLPSTYvJA

Swedish examples:
https://www.youtube.com/watch?v=LLdci4XR9g4
https://www.youtube.com/watch?v=pvD1QJhc06U
https://www.youtube.com/watch?v=yXglfAW-t1c

I guess Eee-kay-yah mmm...~?

That's how the people here pronounced it and based on the videos above that's the closest pronunciation to how Swedish people say it mmm...

Ai-kee-ah.

ee-kay-ah would be the closest option.

ee for I as pronounced in most languages but English;
kay for KE as in Kevin;
ah for A as pronounced in most languages but English again.

Ai-kee-ah.

Is this from Kaela's stream?

Some other pronunciation
…as none of the options include the actual, proper (Swedish), pronunciation.
The Japanese get it pretty much right.

…though, of course, you typically pronounce acronyms, according to the language you're speaking, rather than the pronunciation in the original language, so the typical "Ai-kee-ah" is actually perfectly valid. (however weird/wrong it sounds)

Ee-ke-ah, maybe? (English "phonetic spelling", is a bit weird and inconsistent)

The I ([iː]) is pronounced like the 'ee' in 'free'. Or the "name" of the letter 'e'.
The K is… well it's a k.
The E e is pronounced as… as 'え', more or less. Failing that, I suppose the 'e' in let', is about as close as you'd get? (mrs_choco's suggestion of 'ke' as in 'kevin', is okay I suppose)
The A ([ä] which is a very annoying transcription, given the letter is most often used for a completely different sound) as… as あ, essentially. The "ah"-sound, using "English phonetic spelling", is close enough, I suppose.

as [ikea]

In my area I've always heard (and used) "Ai-kee-yah"

Of course, this might have to do with how different people distinguish sounds. (Even two individuals speaking the same form of their language may do this differently; individual variation isn't limited to biology.)

And none of these are the proper Swedish pronunciation, but unless you actually know something of the language, how many people actually bother with that? Much less, while speaking a language other than Swedish?

(From what I do know of Germanic languages other than English, when written with the Roman alphabet, that "e" is pronounced roughly the way it is in Romaji, or like "é" in French and in English — e.g. "café." I'm not sure which "a" sound is intended, however —is it more like apple or acorn? It's almost certainly not one of English's many schwas, although that's what most English-speakers tend to use. I'm even more clueless about the "I." According to Wikipedia, the proper pronounciation is [ɪˈkêːa], but I can't read IPA.)

Fun poll. I'm pretty sure the way it's supposed to be pronounced eh-keh-ah.