John Brownlee Lonsdale, 1st Baron Armaghdale, known as Sir John Lonsdale, Bt, between 1911 and 1918, was a British businessman and Conservative politician.
- Occupation
- politician
- Position held
- member of the 30th Parliament of the United Kingdom, member of the 29th Parliament of the United Kingdom, member of the 28th Parliament of the United Kingdom, member of the 27th Parliament of the United Kingdom
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- March 23, 1850
