|Preceded by||Norm Sterling|
|Born||MacLarens Landing, Ontario|
|Political party||Progressive Conservative|
|Residence||MacLarens Landing, Ontario|
Jack MacLaren is a Canadian politician, who was first elected to the Legislative Assembly of Ontario in the 2011 election. He represents the electoral district of Carleton—Mississippi Mills as a member of the Ontario Progressive Conservative Party caucus.
In March 2011, MacLaren contested the party's nomination in the riding of Carleton—Mississippi Mills competing against the sitting MPP Norm Sterling. MacLaren won the nomination with the help of one of Sterling's fellow MPPs, Randy Hillier. Hillier who was also a past president of the Ontario Landowners Association campaigned on behalf of MacLaren.
In the 2011 provincial election, MacLaren ran as the Progressive Conservative candidate in Carleton—Mississippi Mills winning against Liberal candidate Megan Cornell by about 9,102 votes. He was re-elected in the 2014 provincial election defeating Liberal candidate Rosalyn Stevens by 10,029 votes.
He is the party's critic on Senate and democratic reform.
|Ontario general election, 2014: Carleton—Mississippi Mills|
|Progressive Conservative||Jack MacLaren||30,590||47.49||−2.80|
|New Democratic||John Hansen||8,744||13.57||+2.23|
|Total valid votes||64,420||100.0||+14.54|
|Progressive Conservative hold||Swing||−0.25|
|Ontario general election, 2011: Carleton—Mississippi Mills|
|Progressive Conservative||Jack MacLaren||28,246||50.29||+2.46|
|New Democratic||Liam Duff||6,371||11.34||+3.72|
|Family Coalition||Cynthia Bredfeldt||549||0.98||+0.18|
|Total valid votes||56,167||100.00||+6.92|
|Total rejected, unmarked and declined ballots||204||0.36||−0.09|
|Progressive Conservative hold||Swing||+0.16|
- "MacLaren wins in Carleton-Mississippi Mills". Your Ottawa Region. October 6, 2011.
- "Veteran Tory MPP Norm Sterling loses nomination battle". The Toronto Star. April 1, 2011.
- "Summary of Valid Ballots Cast for Each Candidate" (PDF). Elections Ontario. October 6, 2011. p. 3. Retrieved 2014-03-02.
- "General Election by District: Kitchener—Conestoga". Elections Ontario. June 12, 2014.