Tan Chay Yan

Tan Chay Yan (; 1871 - 6 March 1916) was a rubber plantation merchant and philanthropist. A Peranakan, Tan is the grandson of philanthropist Tan Tock Seng by his father, Tan Teck Guan.

Tan was noted in Malayan history as the first man to plant rubber on a commercial basis, after he was introduced to rubber planting by Henry Nicholas Ridley. Subsequently, Tan started a rubber estate at Bukit Lintang. He then ventured his rubber plantation business into Sri Lanka. According to his family, Tan's rubber plantation still belonged to the family.

As a philanthropist, Tan also gave $15,000 towards the setting up of a medical college in Singapore. The donation went towards the construction of the Tan Teck Guan Building, which Tan named in memory of his late father. Tan was also appointed as a Justice of the Peace at age 24, and served on the Malacca Municipal Commission. He also served as a Trustee of the Cheng Hoon Teng Temple.

Tan died of malaria at the age of 46. A relative believed he could have caught it as he often spent the long hours spent at the rubber plantations. Tan left behind his wife, Chua Wan Neo, a tenth generation Nyonya and a descendant of Malaccan Kapitan Chua Su Cheong, A road in Melaka and Singapore was also named after him; in Singapore, Chay Yan Street can be found in Tiong Bahru.