Lang Tzu-yun (Chinese: 郎祖筠; pinyin: Láng Zǔyún; 5 April 1965) is a Taiwanese actress.
She was trained in the art of crosstalk by Wu Zhaonan, and founded the Spring Sun Performing Arts Troupe in 1999. The company disbanded in 2008.
In 2014, she was nominated for Best Supporting Actress at the 51st Golden Horse Awards for Sweet Alibis.