William Lamb

William Lamb may refer to:

• William Lamb, 2nd Viscount Melbourne (1779–1848), Prime Minister of the United Kingdom
• William Lamb (artist) (1893–1951), Scottish artist
• William Lamb (Confederate States Army officer) (d. 1909)
• William Lamb alias Paniter (d. 1550), Scottish author
• William F. Lamb (1883–1952), principal designer of the Empire State Building
• William Kaye Lamb (1904–1999), Canadian historian
• pseudonym of Storm Jameson (1891-1986), English journalist and author