Sin Sze Si Ya Temple, Taoist temple in central Kuala Lumpur, Malaysia.

Sin Sze Si Ya Temple stands at 14A Lebuh Pudu, near the Central Market. Its main hall holds the altars of Sin Sze Ya and Si Sze Ya, flanked by a Guanyin hall and a Yiyong shrine for war dead. Inside are a bronze bell donated in 1885, a drum over a century old, two late-Qing carved gateways dated 1887 and 1888, and iron doors inscribed with the Meili ironworks of trustee Chan Sow Lin.

In 1864 Yap Ah Loy brought the spirit tablet of Seng Meng Lee, a Kapitan killed in Sungai Ujong in 1860, from Rasah to Kuala Lumpur and housed it in a wooden shrine. In 1873 he donated land behind his house, and the temple was completed in 1875, honouring Seng as Sin Sze Ya and Chung Piang Lai as Si Sze Ya. It was rebuilt after fire and flood in 1881–1883, repaired in 1938, restored in 1949 after wartime damage, and gazetted a National Heritage Site in 2020.

The temple serves as a spiritual center where visitors observe devotees burning incense and consulting divination sticks to seek guidance and blessings. These practices reflect how local Chinese families maintain their religious traditions in the heart of the city.

The temple stands at 14A Lebuh Pudu, a short walk from the Central Market. It is a working place of worship, so visitors should dress modestly and keep clear of worshippers during prayers and ceremonies. The 2024 procession marking 160 years started here and passed through several downtown streets.

The temple keeps a set of 52 oracle sticks and 100 medicinal prescriptions carved on wooden blocks. Worshippers once drew a numbered stick, then looked up the matching prescription; the blocks are still stored in the temple. A bronze bell donated by a merchant in 1885 and a drum in use for over a century also survive.