The SiS 965, also known as the SiS965 Southbridge, is a chipset component designed by Silicon Integrated Systems Corp. (SiS). It serves as a Southbridge chipset in computer motherboard designs. Southbridge chips are responsible for various I/O functions, including connecting to peripheral devices like hard drives, USB ports, audio controllers, and more.

Key features of the SiS 965 Southbridge may include support for multiple SATA (Serial ATA) connections for storage devices, USB ports, integrated audio, and networking capabilities. It was used in some motherboard designs in the mid-2000s, particularly during the era when DDR2 memory was prevalent.