Jeju Province, South Korea

This is a result of changing of status of the province. It is now a special autonomous province, as far as I can remember, and also there is a change of its subdivisions.
In fact the full official name is Jeju Special Self-Governing Province and here is the link to the same flag as Aco's report on their official website.
New division consists of 1 city Seogwipo and one county Namjeju. Here is the flag of Seogwipo City. And here is the flag of Namjeju County.
Valentin Poposki, 03 December 2009

I spent my holiday this year in East Asia. On Jeju island (former spelling Cheju-do), I wanted to buy the province flag, but I was disappointed. The flag does not longer exist. Even in flag stores, it is not possible to find one anymore. Instead of this, the province and island Jeju-do is flying now one of this ugly logo-flags. I believe, the logo-flag was introduced on 1st of July 2006, when the province became a "self govern province".
I made a picture of it and loaded up at http://groups.yahoo.com/group/flags/photos/album/249825003/pic/992077969/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
English Wikipedia has an image of flag and logo (I don't know about its copyright), which I add on this message.
http://en.wikipedia.org/wiki/Jeju-do
The symbol is shown at the homepage of Jeju government, too:
http://english.jeju.go.kr/contents/index.php?mid=01
Half mast for loosing another nice flag, which was replaced by logomaniacs!
Jan-Patrick Fischer, 10 October 2010

Flag of the Autonomous Province of Jeju, South Korea, after its change of status.
Vanja Poposki, 11 March 2012

From: http://www.provin.cheju.kr/

Flag of Province

The blue triangle of earthenware symbolic of Cheju stands as a symbol for pier Mt. Halla and the Earth, while the white triangle for the Heaven. The circle of the while triangle symbolizes the Sun, and the three wave patterns in the circle are symbolic of Cheju's Samda (three abundance: women, winds and stones) and Sammu (three non-existence: baggers, thieves and gates). All of these portray the pure Cheju people.

Dov Gutterman, 16 March 1999

• Jeju / 제주시
• Bukjeju County / 북제주군 (merged into Jeju city)
• Seogwipo / 서귀포시
• Namjeju County / 남제주군 (merged into Seogwipo city)