John Robertson Dargavel (May 3, 1846 – January 28, 1930)[1] was an Ontario farmer, merchant and political figure.
Prior to his service as an MPP, he served as clerk for South Crosby Township and as a member of the Elgin School Board.
Dargravel was a dairy farmer and was president of the Eastern Ontario Dairymen's Association.
John Robertson's son was James Sawtell Dargavel, who took over the business when his father took office as MPP.
James Sawtell expanded the business to include the cheese mill at Chaffey's Lock.