The Stanford Artificial Intelligence Laboratory (commonly called the Stanford AI Lab, or SAIL), was one of the leading centres for artificial intelligence research from the 1960s through the 1980s.

It was started by John McCarthy after he moved from MIT to Stanford in 1963. From 1965 to 1980, it was housed in the fabled D.C. Power building (named after an executive of G.T.E., which donated the building and site to Stanford, not the type of electricity), in the foothills of the Santa Cruz Mountains overlooking Stanford. In 1980, it moved into Margaret Jacks Hall in the main Stanford campus, and its activities were merged into the Computer Science Department.

SAIL alumni played a major role in many Silicon Valley firms, including Sun Microsystems. Research accomplishments at SAIL were many, including in the fields of speech recognition and robotics.

SAIL also created the WAITS operating system. WAITS ran on various models of Digital Equipment Corporation PDP-10 computers, starting with the PDP-6, then the KA10 and KL10. At one time, the SAIL system was a triple processor KL10/KA10/PDP-6. The SAIL system was shut down in 1991.

See also: SAIL programming language