Mitchison may refer to:
Avrion Mitchison (1928–2022), British zoologist and immunologist Denis Mitchison (1919–2018), British bacteriologist Gilbert Mitchison, Baron Mitchison, known as Dick Mitchison (1894–1970), British Labour politician Graeme Mitchison (1944–2018), Cambridge mathematician and scientist Murdoch Mitchison (1922–2011), British zoologist, son of the Labour politician Dick Mitchison Naomi Mitchison (1897–1999), Scottish novelist and poet Rosalind Mitchison (1919–2002), historian of Scotland who specialised in social history Tim Mitchison, British systems biologist