| Honorific-Prefix: | The Honourable |
| MacCallum Grant | |
| Office: | 12th Lieutenant Governor of Nova Scotia |
| Predecessor: | David MacKeen |
| Successor: | James Robson Douglas |
| Term Start: | November 29, 1916 |
| Term End: | January 12, 1925 |
| Governor General: | The Duke of Devonshire The Lord Byng of Vimy |
| Premier: | George Henry Murray Ernest Howard Armstrong |
| Birth Date: | 17 May 1845 |
| Birth Place: | Hants County, Nova Scotia |
| Death Place: | Halifax, Nova Scotia |
| Nationality: | Canadian |
| Spouse: | Laura MacNeill Parker (m. 1887) |
| Party: | Conservative |
| Children: | Eric MacNeill Grant Gerald Wallace Grant Margaret Frances MacNeill Grant John Moreau Grant Grainger Stewart Grant Harold Taylor Wood Grant |
| Profession: | Businessman |
MacCallum Grant (May 17, 1845 - February 23, 1928) was a Canadian businessman and the 12th Lieutenant Governor of Nova Scotia.
Born at Loyal Hill (in the area of Summerville) in Hants County, Nova Scotia, the son of John Nutting and Margaret (MacCallum) Grant, Grant was educated in Newport, Nova Scotia. He commenced his business career with S. A. White & Co, in 1873. He was a member of the firm Black Bros. Co. from 1875 to 1893. He then formed the firm Grant, Oxley & Company. Grant, Oxley & Company merged with Alfred J. Bell & Co. Ltd. in 1964 and still operates today under the name of Bell & Grant Insurance.
In 1899 he was appointed[1] as Imperial Consul of Germany in Halifax. From 1916 to 1925, he served as Lieutenant Governor of Nova Scotia. He was Lieutenant Governor (Canada) at the time of the Halifax Explosion. During the 1919 visit to Nova Scotia by Edward VIII as Prince of Wales, Grant hosted the royal party at Government House (Nova Scotia).
He married Laura MacNeill Parker (a daughter of Daniel McNeill Parker) in 1887. They had five children:
He received honorary degrees from Acadia University (LL.D.) in 1919 and from the University of King's College (D.C.L.) in 1921.
A portrait of the Honourable MacCallum Grant by Henry Harris Brown was donated to the Art Gallery of Nova Scotia in 2006 by Grant's granddaughter, Margaret H. Grant. The portrait was unveiled by the 30th Lieutenant Governor of Nova Scotia, the Honourable Myra Freeman. The portrait is on loan to Government House (Nova Scotia) and can be viewed there in the ballroom.
He died in Halifax in 1928.[3]