| Antoine Girouard | |
| Birth Date: | 25 April 1836 |
| Birth Place: | Sainte-Marie-de-Kent New Brunswick, Canada  |
| Death Place: | New Brunswick, Canada |
| Education: | Public school |
| Occupation: | Teacher, trader |
| Spouse: | Isabella Caisie |
| Children: | 9 children |
| Parents: | Marin Girouard & Suzanne Doucett |
Antoine Girouard (April 25, 1836 - June 7, 1904) was a political figure in New Brunswick of Acadian origin. He represented Kent County from 1870 to 1874 in the Legislative Assembly of New Brunswick as a Conservative member.
He was born and educated in Sainte-Marie-de-Kent, New Brunswick. Girouard was a justice of the peace. In 1856, he married Isabella Caisie.