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Is the "wa-particle" in katakana ワ or ハ？

(Just a quick question - I think I have seen both used, but if ワ is correct
then I have just seen the results of a computer o/p automatically using ハ)
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2012-09-04T00:10:09.267
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2021-01-29T21:43:36.450
2015-04-05T09:56:59.853
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katakana orthography particle-は
Is the "wa-particle" in katakana ワ or ハ？
ハ for the topic particle. There's no difference from hiragana.
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2012-09-04T00:19:10.100
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2012-09-04T00:19:10.100
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Katakana is just used for foreign words, the grammar elements are not written
in Katakana.
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2012-09-05T05:13:00.037
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You can see it's **ハ** as what the old MS office assistant _F1_ said

[![F1 Japanese office
assistant](https://i.stack.imgur.com/TLtOW.png)](https://i.stack.imgur.com/TLtOW.png)

You can also see the usage of **ヲ** in the above sentence

* * *

As a side note the text above isn't a translation of the English version

[![F1 English office
assistant](https://i.stack.imgur.com/mGTwY.gif)](https://i.stack.imgur.com/mGTwY.gif)

Unfortunately F1 is the only one who _talks_ in Katakana. Here are the other
[Japanese assistants](http://d.hatena.ne.jp/akaibara/20130815) and [English
assistants](https://menga.net/bring-back-earl-the-cat)
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2013-11-13T00:45:43.063
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The basic answer is that は is written ハ in katakana.

* * *

However, I think it depends on _why_ it's written in katakana. One reason you
might write something in katakana is to communicate pronunciation, and in this
case the particle は would be written ワ:

```

      spelling        pronunciation
    
      おはよう         オハヨー
      こんにちは       コンニチワ
    
```

You can see this sort of use of katakana in [some official
documents](https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/gendaikana/huhyo_kyo.html),
for example.

On the other hand, if you're just writing regular Japanese using katakana,
you'd usually spell は as ハ. Another reason you might use katakana is for the
_use-mention distinction_ ; some books or papers about Japanese grammar, for
instance, write particles in katakana when they're mentioned rather than used,
and in this context は would be ハ (and を would be ヲ, and so on).
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2013-11-13T08:37:39.700
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