James Langstaff

James Miles Langstaff (June 3, 1825 – August 5, 1889) was a Canadian physician and the reeve of Richmond Hill, Ontario in 1880 and a village councillor there in 1878.

Langstaff was born in Richmond Hill, at the Langstaff residence, an area then known as Langstaff Corners (now near Highway 7 and Yonge Street). He was the son of Jon Langstaff and Lucy Miles and grandson of Abner Mills.

Langstaff first studied medicine as a "house pupil" under John Rolph in Toronto. He later travelled to study in England, at Guy's Hospital in London. After completing his schooling, he was licensed by the Upper Canada Medical Board and he set up a medical practice in Unionville in April 1849 but after only four months relocated it to Richmond Hill. In 1850 and 1851, Langstaff was listed as a professor at Rolph's Toronto School of Medicine.

Langstaff also owned a sawmill in the area. It is part of the Langstaff Discovery Centre whose name more generally honours his family line.