Martin Robert McGregor (22 February 1859 - 17 August 1936) was an Australian politician.
He was born in Hobart to merchant Duncan Robert McGregor and Betsy Roberts. He grew up in Melbourne, and became a public servant with the Chief Secretary's Department. After eighteen years in the public service he went to Queensland to work on the land, and ten years later became a farmer at Narracan. On 24 September 1902 he married Agnes Marshall. He served on Narracan Shire Council from 1908 to 1936 and was thrice president (1908 - 09, 1917 - 18, 1929 - 30). In 1922 he was elected to the Victorian Legislative Council for Gippsland Province as a Nationalist. He was a minister without portfolio from March to July 1924 and from 1924 to 1927. McGregor held his seat until his death at Narracan in 1936.[1]