'''蒋友柏'''（蔣友柏、しょうゆうはく／ジャン・ヨウブゥオ、1976年9月10日-）は、台湾の実業家。蒋介石のひ孫として知られている。父は蒋経国三男の蒋孝勇、母は政治家の蒋方智怡。

== 経歴 ==
アメリカ・ニューヨーク大学財政金融学科卒業。

卒業後は政界には入らず、2003年、弟の蒋友常とともにデザイン会社「橙果設計公司（DEM）」[http://www.dem.com.tw/]を起業した。社長の友柏自ら頭を下げて営業に回った甲斐もあり、起業時わずか社員数7名だったDEMは順調な成長を遂げ、2005年にはルノーF1チームのロゴデザインを担当するまでになった。<ref>[http://www.sinorama.com.tw/jp/show_issue.php?id=200659505034j.txt&cur_page=1&table=4&distype=&h1=&h2=&search=&height=&type=&scope=&order=&keyword=&lstPage=&num=&year=2006&month=5 枠を破って自分の道を行く 蒋友柏とDEM]</ref>

営業も兼ねてマスメディアにも積極的に顔を出し、その毛並みの良さと整った容貌もあり、若い女性を中心に台湾では高い人気を集めている。

== 発言 ==
蒋介石のひ孫という出自もあり、その発言はしばしばメディアに大きく取り上げられる。

国民党への批判を行った。さらに彼はDEMが大陸に支社を置いたことについて、あくまで大陸はビジネス上の進出先に過ぎず、自分は台湾で生まれ台湾で死ぬことを望んでいる、と強調した。母・蒋方智怡が蒋介石父子の遺体を中国に埋葬することを求めるなど、<ref>[http://www.asahi.com/international/update/1224/TKY200712240136.html 蒋介石親子の遺体「中国に戻したい」　遺族発言が波紋]</ref>保守派の政治家として知られていたこともありこの発言は波紋を呼んだ。<ref>[http://blog.goo.ne.jp/mujinatw/e/a25677b9961273c78ed6271bccb53b63 蒋介石の曾孫が自己反省と国民党批判を展開]</ref>

さらに同年12月、陳水扁政権の「脱蒋介石化」政策に対し「民進党の選挙対策」と冷ややかな態度を取りつつも賛意を表明するとともに、重ねて国民党の批判を行い、改めて台湾独立派へのシンパシーを示した。<ref>[http://mainichi.jp/photo/news/20071226k0000m030137000c.html 台湾：陳政権の「脱蒋介石化」進む　ひ孫も賛意表明]</ref>

'''Demos Yu-bou Chiang''' (Traditional Chinese:蔣友柏, b.September 10, 1976 in Taipei, Taiwan) is a Taiwanese businessman. He founded DEM Inc. (橙果設計), a popular design studio in Taiwan in July 2003 and has served as its chairman since then. He is also known for being the great-grandson of the late Republic of China (ROC) President Chiang Kai-shek and the grandson of late President Chiang Ching-kuo. 

Born to Chiang Ching-kuo's third son Chiang Hsiao-yung, Demos Chiang was raised in Taipei until his grandfather's death in 1988. After his grandfather's death, Chiang's parents sent him to live in Canada and later the United States, though he still retained his ROC nationality. Chiang received a bachelors degree in Information Management from New York University in late 1990s. After graduating, Chiang worked in the entertainment and fashion industries in Taiwan, Hong Kong and Singapore, until founding DEM Inc. in 2003.

In Spring 2001, Chiang began a relationship with local starlet Lin Heng-yi (林姮怡), the daughter of Buddhist 林欣榮). The couple married in February 2003 and now have a daughter born in 2003 and a son born in 2005.

Despite his pedigree and celebrity identity, Demos Chiang has repeatedly announced in recent years that he is not interested in political affairs. He has also accused both the Kuomintang and the Democratic Progressive Party for "poor political tactics", especially for utilizing Chiang Kai-shek and Chiang Ching-kuo as figures of worship or denigration. <ref>[http://tw.news.yahoo.com/article/url/d/a/070523/11/eres.html 〈蔣友柏：我家人曾迫害台灣人〉]，FTV News，May 24, 2007</ref> In contrast to other prominent members of the Chiang family, such as John Chiang and his mother Chiang Fang Chi-yi, Demos Chiang has expressed his belief that the controversies of his ancestors should be faced fairly and left to history. <ref>李淑華 台北報導，〈蔣友柏：反蔣應放進歷史〉，Apple Daily (Taiwan)，Dec 25, 2007</ref><ref>BBC：[http://news.bbc.co.uk/chinese/trad/hi/newsid_7150000/newsid_7159100/7159174.stm 那天，與蔣友柏談蔣家]</ref> He started a personal blog in January 2008 to further explain his beliefs.