Bian Jianmu (died 1878) was a Chinese-American triad gangster who served as a hatchet-man for the Hop Wei Tong in San Francisco during the 1870s. In 1878, he and several other Hop Wei gangsters were killed in a failed assassination attempt on Mai Ling at her home shortly after the SFPD broke up the Long Zii Tong and Hop Wei Tong's counterfeiting operation.