| Honorific-Prefix: | The Hon. |
| Christophe-Alphonse Geoffrion | |
| Constituency Mp1: | Verchères |
| Parliament1: | Canadian |
| Predecessor1: | Félix Geoffrion |
| Successor1: | The electoral district was abolished in 1892. |
| Term Start1: | 1895 |
| Term End1: | 1896 |
| Constituency Mp2: | Chambly—Verchères |
| Parliament2: | Canadian |
| Predecessor2: | The electoral district was created in 1893. |
| Successor2: | Victor Geoffrion |
| Term Start2: | 1896 |
| Term End2: | 1899 |
| Birth Date: | 23 November 1843 |
| Birth Place: | Varennes, Canada East |
| Death Place: | Dorion, Quebec |
| Spouse: | Eulalie Dorion |
| Party: | Liberal |
| Relations: | Félix Geoffrion, brother Victor Geoffrion, brother |
| Cabinet: | Minister Without Portfolio (1896-1899) |
Christophe-Alphonse Geoffrion, (November 23, 1843 - July 18, 1899) was a Canadian lawyer, professor, and politician.
Born in Varennes, Canada East, the son of Félix Geoffrion and Catherine Brodeur, he was the brother of Félix Geoffrion, a notary and politician. He graduated with a Bachelor of Civil Law degree from McGill College in 1866 and was called to the bar in 1866. A practicing lawyer, he also taught at McGill. When his brother died in 1894, he was acclaimed in the resulting 1895 by-election in the riding of Verchères. From 1896 to 1899, he was a Minister without Portfolio in the cabinet of Wilfrid Laurier. He died while in office in 1899. His brother, Victor Geoffrion was acclaimed to the seat after his death.