Donald Macgregor may refer to:
Donald Macgregor (athlete) (1939–2020), Scottish athlete at the 1972 summer Olympics Donald Robert Macgregor (1824–1889), Scottish politician, Member of Parliament for Leith Burghs 1874–1878 Donald MacGregor (Liberal MP) (1839–1911), Liberal Member of Parliament for Inverness-shire 1892–1895
See also Donald Morris McGregor (1923–2003), Canadian politician Don McGregor (born 1945), American comic book writer