Joseph Hardcastle may refer to:
*
Joseph Hardcastle (1752–1819), English merchant and a founder of The Missionary Society
*
Joseph Hardcastle (politician), British Liberal Party MP
* Joseph Alfred Hardcastle,
FRAS (1868–1917), grandson of
Joseph Hardcastle (politician) and
Sir John Herschel appointed Director of
Armagh Observatory just before his death
*
Joseph Hardcastle (accountant) (died 1906), American
Certified Public Accountant
Certified Public Accountant (CPA) is the title of qualified accountants in numerous countries in the English-speaking world. It is generally equivalent to the title of chartered accountant in other English-speaking countries. In the United Sta ...
{{hndis, name=Hardcastle, Joseph