| Joseph-Olivier Coté | |
| Office1: | Clerk of the Privy Council |
| Term Start1: | January 13, 1880 |
| Term End1: | April 24, 1882 |
| Predecessor1: | William Alfred Himsworth |
| Successor1: | John Joseph McGee |
| Birth Date: | 8 April 1820 |
| Birth Place: | Quebec City, Lower Canada |
| Death Place: | Ottawa, Ontario |
Joseph-Olivier Coté (April 8, 1820 - April 24, 1882) was a Canadian notary, public servant, and Clerk of the Privy Council from 1880 to 1882.
Born in Quebec City, Lower Canada, the son of Olivier Côté and Louise-Charlotte Sasseville, Coté was educated at the Séminaire de Québec from 1831 to 1835. He then studied law and was admitted as a notary in 1841. From 1842 to 1843, he was the deputy registrar of Berthier County. In 1845, he was appointed a clerk in the Executive Council Office of the Province of Canada. In 1872, he was appointed deputy clerk of the Privy Council Office of the dominion. In 1880, he was appointed Clerk of the Privy Council. He served until his death in 1882.