William Hammond Wright (November 4, 1871 – May 16, 1959) was an American astronomer and the director of the Lick Observatory from 1935 until 1942.

From 1903 to 1906 he worked on establishing the "Southern station" of the observatory at Cerro San Cristobal near Santiago de Chile.

It only took him 6 months to start with observations from this new site, and he recorded a large series of radial velocity measurements of stars in the southern sky.

From 1918 to 1919 he was stationed at Aberdeen Proving Ground working for the ordnance section of the United States Army.

Wright was elected to the United States National Academy of Sciences in 1922 and the American Philosophical Society in 1935.