1. France.

2. Sweden.

3. Thailand.

4. Afghanistan.

5. Japan.

6. Portugal & South America.

7. Mexico.

8. China.

9. Indonesia.

10. Israel.

11. Malaysia.

12. South Korea.

In Japan they write WWWW. In Thailand they type 5555.
It stands for "Mort de rire", which translates as "died of laughter".
Short for "asgarv", which is the Swedish word for intense laughter.
The number 5 in Thai (๕) sounds like "ha" when you say it out loud.
The initials stand for "Ma Khanda Mikonom", which means "I am laughing".
From the word "warai", meaning "laugh".
Short for "risos", meaning "laughter".
As in, the Spanish spelling of "haha".
From emoji no. 233, used on a popular online forum in China to express laughter.
An abbreviation of "waka", the Indonesian onomatopoeia for laughing.
Pronounced "haha"
Simply "ha", three times.
Note: this one actually represents the sound of a quiet giggle, rather a full-on ROFL.