| Zhang Beisan | |
| Native Name: | 张备三 |
| Native Name Lang: | sit |
| Birth Place: | Zhejiang, China |
| Occupation: | Diplomat |
| Nationality: | Chinese |
| Children: | 1 |
| Office: | Chinese Ambassador to Portugal |
| Term Start: | May 2010 |
| Term End: | February 2013 |
| Predecessor: | Gao Kexiang |
| Successor: | Huang Songfu |
| Office2: | Chinese Ambassador to Angola |
| Predecessor2: | Jiang Yuande |
| Successor2: | Zhang Bolun |
| Term Start2: | September 2002 |
| Term End2: | May 2008 |
Zhang Beisan (born 1952), Chinese diplomat,is the former Ambassador to Angola and Portugal of the People's Republic of China.
He replaced Jiang Yuande as the Chinese Ambassador to Angola from 2002 through 2005 under the appointment of the then-Chinese President Jiang Zemin,and was succeeded by Zhang Bolun in May 2008.He was then appointed Ambassador to Portugal, in place of Gao Kexiang.
On 25 February 2013, the then-Chinese President Hu Jintao announced the appointment of Huang Songfu as new Ambassador to Portugal.