About John Douglas MacLachlan
Lived 1906 – 1987 (aged 81). John Douglas MacLachlan was a Canadian botanist, known for University of Guelph.
John Douglas MacLachlan (July 30, 1906 – October 13, 1987) was a Canadian botanist and the first president of the University of Guelph.
Born on a farm near Burritts Rapids, Ontario, he received a Bachelor of Arts degree in chemistry and biology at Queen's University in 1931. He received a Master of Arts degree in 1933 and Ph.D. in plant pathology in 1935 from Harvard University. In 1939, he was appointed assistant professor of botany at the Ontario Agricultural College. He became head of the Department of Biology in 1948 and president in 1950. He was the first president of the University of Guelph serving from 1964 to 1967.
The J.D. MacLachlan Building at the University of Guelph is named in his honour.
He died of pneumonia in 1987.
Don’t just read it —
keep it.
Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.
- E-book
- Audio
- Video
Instant download · yours to keep · every purchase keeps this site free
Important facts
People in John Douglas MacLachlan's life
Named in this biography and alive at the same time
Related people
Same field, nearest in time
Contemporaries
People whose lives overlapped John Douglas MacLachlan's
Frequently asked questions
Who was John Douglas MacLachlan?
Canadian botanist (1906-1987)
When was John Douglas MacLachlan born?
John Douglas MacLachlan was born on 30 July 1906 in Burritts Rapids.
When did John Douglas MacLachlan die?
John Douglas MacLachlan died on 13 October 1987.
What was John Douglas MacLachlan's occupation?
John Douglas MacLachlan was a botanist.
What was John Douglas MacLachlan known for?
John Douglas MacLachlan was known for University of Guelph.
What nationality was John Douglas MacLachlan?
John Douglas MacLachlan was Canadian.
Sources & further reading
· Wikipedia: John Douglas MacLachlan
· DBpedia: John Douglas MacLachlan
Cite this page
APA: Biography.guide. (2026). John Douglas MacLachlan. https://biography.guide/john-douglas-maclachlan/
MLA: "John Douglas MacLachlan." Biography.guide, https://biography.guide/john-douglas-maclachlan/.
Chicago: "John Douglas MacLachlan." Biography.guide. https://biography.guide/john-douglas-maclachlan/.
Data last updated: 2026-09-22 · Spot an error? Report a correction.
Page generated 2026-09-27 05:22 UTC