William Napier may refer to:
- William Ewart Napier (1881–1952), American chess master
- William Francis Patrick Napier (1785–1860), British soldier and military historian
- William M. Napier (born 1940), author, also known as Bill Napier
- William Napier, 9th Lord Napier (1786–1834), Royal Navy officer, politician and diplomat
- William Napier (novelist), historical novelist pseudonym of Christopher Hart
- William Napier (VC) (1828–1908), English recipient of the Victoria Cross
- William Napier (admiral) (1877–1951), British admiral
- William Napier (British Army officer) (1818–1903), British general
Famous quotes containing the word napier:
“Not only do our wives need support, but our children need our deep involvement in their lives. If this period [the early years] of primitive needs and primitive caretaking passes without us, it is lost forever. We can be involved in other ways, but never again on this profoundly intimate level.”
—Augustus Y. Napier (20th century)