| Alexander McDonald Paterson | |
| Office: | Member of the Legislative Assembly of British Columbia |
| Predecessor: | John Oliver |
| Successor: | John Walter Berry |
| Term Start: | 1921 |
| Term End: | 1928 |
| Constituency: | Delta |
| Birth Date: | 12 October 1871 |
| Birth Place: | Middlesex County, Ontario, Canada |
| Death Place: | Vancouver, British Columbia, Canada |
| Spouse: | Lola Vea Bowers |
| Party: | British Columbia Liberal Party |
| Occupation: | farmer |
| Residence: | Ladner, British Columbia |
Alexander McDonald Paterson (October 12, 1871 – March 30, 1953) was a Canadian politician. After being an unsuccessful candidate in the 1916 provincial election, he served in the Legislative Assembly of British Columbia from 1921 to 1928 from the electoral district of Delta, a member of the Liberal party. He was unsuccessful in his bid for a third term in the Legislature in both the 1928 and 1933 provincial elections.[1] [2] He also served as the Reeve of Delta for 28 years.[3]