A
- Aalen, Odd Olai (1947–)
- Abbott, Edith
- Abelson, Robert P.
- Abramovitz, Moses
- Achenwall, Gottfried (1719–1772)
- Adelstein, Abraham Manie (1916–1992)
- Ahsan, Riaz (1951–2008)
- Aitchison, John (1926–)
- Aitken, Alexander (1895–1967)
- Akaike, Hirotsugu (1927–2009)
- Ali, Mir Masoom
- Allen, R. G. D.
- Allison, David B.
- Altman, Doug
- Amemiya, Takeshi
- Anderson, Oskar (1887–1960)
- Anderson, Theodore Wilbur
- Anscombe, Francis
- Anselin, Luc
- Armitage, Peter (1924–)
- Arrow, Kenneth
- Ashley-Cooper, Anthony
- Austin, Oscar Phelps
- Ayres, Leonard Porter
Read more about this topic: List Of Statisticians