| Yang Chengxu | |
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| Birth Place: | Qingdao, Shandong |
| Alma Mater: | Fudan University Xinhua Foreign Languages Institute |
| Office: | Chair, PECC China |
| Term Start: | 1995 |
| Term End: | September 2005 |
| Predecessor: | Li Luye |
| Successor: | Mei Ping |
| Office2: | President, China Institute of International Studies |
| Term Start2: | May 1993 |
| Term End2: | November 2001 |
| Predecessor2: | Du Gong |
| Successor2: | Song Mingjiang |
| Office3: | Chinese Ambassador to Austria |
| Term Start3: | November 1985 |
| Term End3: | October 1989 |
| Predecessor3: | Wang Shu |
| Successor3: | Hu Benyao |
Yang Chengxu is a senior Chinese diplomat to German-speaking countries.
He was born in Qingdao in 1930 and later moved to Shanghai with his family. In 1952, he received his bachelor's degree in German Literature from Fudan University and started to work for the All-China Journalists Association.In 1962, Yang was sent to the Xinhua News Agency-founded Foreign Languages Institute to take advanced training courses.In 1973, he joined the Chinese Foreign Ministry and served successively as Secretary, Counsellor and Minister-Counsellor in Chinese Embassies in Federal Republic of Germany and German Democratic Republic.
In 1985, he was appointed Chinese Ambassador to Austria and was succeeded by Hu Benyao in 1989.He was then appointed director of the Department of Policy Planning and deputy director of the Department of West European Affairs of the Foreign Ministry.
From May 1993, he succeeded Du Gong as President of the China Institute of International Studies and was relieved from the position in November 2001.He also chaired PECC China, the China National Committee for Pacific Economic Cooperation (CNCPEC) from 1995 to 2005.