Tengwang Ge Xu (Chinese: 滕王閣序; pinyin: Téngwáng Gé Xù) (Preface to the Prince of Teng's Pavilion, full name Qiuri deng Hongzhou Tengwang Ge Jianbie Xu (Chinese: 秋日登洪府滕王閣餞別序; pinyin: Qiurì deng Hóngzhou Téngwáng Gé Jiànbié Xù) (Preface to a farewell feast atop the Prince of Teng's Pavilion in Autumn) or Tengwang Ge Shi Xu (Chinese: 滕王閣詩序; pinyin: Téngwáng Gé Shi Xù) (Preface to a Poem on the Prince of Teng's Pavilion), is a piece of literature by Wang Bo of the Tang Dynasty. It is considered a founding essay of Tang Literature
It is classified as Pianwen (Chinese: 駢文; pinyin: Piánwén), which depends greatly on rhythm, somewhat like classical Chinese poetry, but does not have a restriction of how many characters should be in one sentence, and how many sentences in one paragraph. It is named after Teng Wang Ge, a pavilion standing by the Gan River of Nanchang City, which was then called Hongzhou (Chinese: 洪州; pinyin: Hóngzhou) and is the capital of the current province of Jiangxi. It was first built in the early Tang Dynasty.