Naomi Margaret Haldane (also Naomi Mitchison), Scottish writer

J. B. S. Haldane, British geneticist and evolutionary biologist, namesake of:

Charlotte Haldane, British feminist writer

John Scott Haldane, British physician, discoverer of:

Haldane's Dilemma, referring to the speed of evolution

Richard Burdon Haldane, 1st Viscount Haldane, Lord Chancellor and 'Father of the Territorial Army'

James Alexander Haldane, Scottish independent church leader

Robert Haldane, Scottish churchman

the Haldane Effect in hemoglobin

James Aylmer Lowthorpe Haldane, British soldier

Lewis Haldane, Welsh footballer

Haldane's Law, a statement about the universe

Haldane's Rule, referring to interspecies mating

Haldane (lunar crater)

A. R. B. Haldane, social historian and author

Haldane, Illinois

Graeme Haldane (Thomas Graeme Nelson Haldane), Scottish engineer

Daniel Rutherford Haldane, Scottish physician

William Stowell Haldane (also William Haldane), Crown Agent for Scotland

Elizabeth Haldane, first female Justice of the Peace in Scotland