1. (noun) Scottish geneticist (son of John Haldane) who contributed to the development of population genetics; a popularizer of science and a Marxist (1892-1964)

• j. b. s. haldane
• john burdon sanderson haldane

2. (noun) Scottish physiologist and brother of Richard Haldane and Elizabeth Haldane; noted for research into industrial diseases (1860-1936)

• john haldane
• john scott haldane

3. (noun) Scottish writer and sister of Richard Haldane and John Haldane (1862-1937)

• elizabeth haldane
• elizabeth sanderson haldane

4. (noun) Scottish statesman and brother of Elizabeth and John Haldane (1856-1928)

• first viscount haldane of cloan
• richard burdon haldane
• richard haldane