The Nattukkottai Chettiar Temple also known as Arulmigu Thandayuthapani Temple is one of the more famous Hindu temples located in Penang, Malaysia. Dedicated to Lord Subramaniam, also known as Lord Murugan, it is better known as the Thaneermalai Temple.

     Located on Waterfall Road (Jalan Air Terjun), the Shaivite temple is the central focus of the annual Thaipusam festival in Penang.

     It was founded around 1854, after the chettiar community in Penang Street bought the piece of land to build the chettiar quarters, or chettinar. Being astute businessmen and moneylenders, the chettiar build temples that are hallmarks of quality, and are usually well managed as well as financially secure. Within the chettiar quarters is the temple of Thendayuthapani, an incarnation of the deity Murugan. This temple was consecrated in 1857. It was build in the chokkatan, or chequered design.

     The present structure was consecrated in 1935. Immediately opposite the Nattukkottai Chettiar Temple is the Sri Meenakshi Sundraeswar Temple.