Thermaltake Technology Co., Ltd. (Chinese: 曜越科技; pinyin: Yàoyuè Kējì; To Exceed Radiant Technology) is a Taiwanese manufacturer of PC case designs, power supplies, cooling devices and other peripherals. Its main headquarters are located in Taipei, Taiwan. It has multiple manufacturing facilities in mainland China, including a major plant at Dongguan, and as of September 30, 2024 had a trailing twelve-month revenue of $125M. In 2021 Forbes listed Thermaltake on its annual Asia's 200 Best Under A Billion; more recently the company has increased its presence in the computer gaming market.

Thermaltake was founded in Taiwan in 1999. Its American headquarters were established at the same time with offices in Southern California.

At Computex 2015, Thermaltake introduced two new computer cases that were very similar to CaseLabs' SM8 and TH10 cases with the pedestal accessory.

Thermaltake delivers a series of gaming mice, computer keyboards and other peripherals targeted towards competitive gamers through the Tt eSports brand. Tt eSPORTS also sponsors a variety of eSports teams and streamers across the world.

In 2009, Thermaltake launched a mobile accessory brand called LUXA2.