LGA 775, also known as Socket T, is an Intel desktop CPU socket. LGA stands for Land Grid Array. The word "socket" is a misnomer, because an LGA 775 motherboard has no socket holes; instead, it has 775 protruding pins which touch contact points on the underside of the processor (CPU).

The Prescott and Cedar Mill Pentium 4 cores, as well as the Smithfield and Presler Pentium D cores, used the LGA 775 socket. In July 2006, Intel released the desktop version of the Core 2 Duo (codenamed Conroe), which also uses this socket, as does the subsequent Core 2 Quad. Intel changed from Socket 478 to LGA 775 because the new pin type offers better power distribution to the processor, allowing the front side bus to be raised to 1600 MT/s.

The 'T' in Socket T was derived from the now canceled Tejas core, which was to replace the Prescott core. Another advantage of this newer architecture is that it is now the motherboard which has the pins, rather than the CPU, transferring the risk of pins being bent from the (usually more expensive) CPU, to the (typically less expensive) motherboard. Furthermore, the risk of bent pins is reduced because the pins are spring-loaded and locate onto a surface, rather than into a hole.

Also, the CPU is pressed into place by a "load plate", rather than human fingers directly. The installing technician lifts the hinged "load plate", inserts the processor, closes the load plate over the top of the processor, and pushes down a locking lever. The pressure of the locking lever on the load plate clamps the processor's 775 copper contact points firmly down onto the motherboard's 775 pins, ensuring a good connection.

The load plate only covers the edges of the top surface of the CPU. The center is free to make contact with the cooling device placed on top of the CPU.

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