DFI, or Diamond Flower Inc., is a motherboard manufacturer based in Taiwan, designing and manufacturing of computer hardware products such as motherboards, Smart Grids, Slot Machines, Automated Teller Machines, High-Speed Weigh-In-Motion systems and industrial PCs.

DFI was first established in 1981 by Y.C Lu. At that time, DFI began as a graphics card maker with a turnover of 100 cards. In 1992, DFI abandoned its graphics card production and switched to the production of motherboards as the graphics card market was too limited at the time and did not have potential to grow. After 5 years, DFI quickly gained a reputation in the Asia-Pacific region. It peaked as high as one of the top 15 motherboard manufacturers at that time.

In 1998, DFI became the sole design partner for the Intel 810 series chipset, which gained more attention. In 2003, DFI internally reorganised its line into 3 distinct groups. One was the standard OEM line, another is the Infinity budget range, and the last as the LANParty range. The head of the LANParty range was Oskar Wu, who joined DFI after he resigned from ABIT after the NForce series.

Currently, as of 2006, DFI had left being one of the most competitive manufacture as it used to be in 90's, as of 2009 DFI told its LANParty team there would be no more LANParty products. They now specialized in some industrial computing and legacy parts for old computers.