| John Harold McLaughlin | |
| Birth Date: | 26 March 1905 |
| Birth Place: | Edmonton, Alberta[1] |
| Office: | Member of the Legislative Assembly of Alberta |
| Constituency: | Stony Plain |
| Term Start: | June 29, 1955 |
| Term End: | June 18, 1959 |
| Predecessor: | Cornelia Wood |
| Successor: | Cornelia Wood |
| Party: | Liberal |
John Harold McLaughlin (March 26, 1905 - December 8, 1991) was a provincial level politician from Alberta, Canada. He served as a member of the Legislative Assembly of Alberta from 1955 to 1959 sitting with the opposition Liberal caucus.
McLaughlin ran for a seat to the Alberta Legislature in the electoral district of Stony Plain in the 1955 Alberta general election. He won the district defeating incumbent Cornelia Wood on a surge of support that would see the Liberal vote improve by almost 30% from the previous election.[2]
McLaughlin stood for a second term in the 1959 Alberta general election. He would again face Wood who would win her seat back after McLaughlin lost a significant share of his 1955 vote.[3] The two would face each other for the third time in the 1963 Alberta general election. Wood kept her seat as they both lost 4% of their popular vote coming in first and second respectively in the five-way race.[4]