| Zhang Lan | |
| Native Name Lang: | zh |
| Term Start: | 1 October 1949 |
| Term End: | 27 September 1954 |
| Term Start1: | 27 September 1954 |
| Term End1: | 9 February 1955 |
| 1Blankname1: | Chairman |
| Term Start2: | 25 December 1954 |
| Term End2: | 9 February 1955 |
| 1Blankname2: | Chairman |
| Term Start3: | 10 October 1941 |
| Term End3: | 9 February 1955 |
| Birth Date: | 2 April 1872 |
| Death Place: | Beijing Hospital, Beijing, China |
| Mawards: | is not set --> |
Zhang Lan (; 1872 – February 1955), courtesy name Biaofang (表方), was a Chinese political activist best known for being the chairman of the China Democratic League from its founding in 1941 until his death in 1955.
Zhang was born into a scholarly family in Nanchong, Sichuan in 1872. Witnessing the turmoil at the end of the Qing dynasty, Zhang was attracted to the reformist views of Liang Qichao, and he joined the group advocating constitutional monarchy for China. In 1911, Zhang was vice-chairman of the committee of shareholders that opposed the planned nationalization of the projected Sichuan-Hankou railroad. The protests against the plan swelled into an uprising that was easily quelled by authorities.
Zhang remained a political leader in Sichuan province. In 1916, he organized a small force to act against Yuan Shikai, but Yuan died before the troops saw any action. Zhang served briefly in 1920 as governor of Sichuan province. In the following years, however, Zhang focused primarily on education. He served as president of Chengdu Normal College for two years before becoming president of Chengdu University in 1928. After the Second Sino-Japanese War began in 1937, Zhang was appointed a member of the . Although he rarely participated in the body's deliberations, he was respected for his speeches criticizing the Nationalist government.
When a number of opposition groups joined to form the League of Chinese Democratic Political Groups in 1941, Zhang was elected chairman. As a non-partisan figure, he calmed disagreements between the various constituent groups of the League. He retained this position after the League's reorganization into the China Democratic League in 1944, and until his death in 1955.
The China Democratic League was outlawed in 1947, after which Zhang was placed under house arrest in Shanghai. In the spring of 1949, he escaped with the aid of Chinese Communist Party agents and traveled to Beijing to assist in forming the new government. He headed the China Democratic League delegation to the first Chinese People's Political Consultative Conference in September 1949, and was elected one of the Vice-chairmen of the Central People's Government after the founding of the People's Republic of China on October 1. Zhang held this position until 1954, when the government was reorganized to have only one vice-chairman, at which time he was made a Vice Chair of the Standing Committee of the National People's Congress. Zhang died of arteriosclerosis in February 1955 at the age of 84. He was survived by his wife, Liu Huicheng.