| J. Henri Marceau | |
| Office1: | Ontario MPP |
| Term Start1: | 1935 |
| Term End1: | 1937 |
| Successor1: | Joseph Élie Cholette |
| Term Start2: | 1919 |
| Term End2: | 1923 |
| Predecessor2: | Henri Morel |
| Successor2: | Henri Morel |
| Constituency2: | Nipissing |
| Birth Date: | 29 October 1879 |
| Birth Place: | Pont-Rouge, Quebec, Canada |
| Death Place: | North Bay, Ontario, Canada |
| Occupation: | General contractor |
| Spouse: | Elida Seguin |
Joseph Henri Marceau (October 29, 1879 – April 9, 1955) was an Ontario contractor and political figure. He represented Nipissing in the Legislative Assembly of Ontario from 1919 to 1923 and from 1935 to 1937 as a Liberal member.
He was born in Pont-Rouge, Quebec, the son of Hypolite Marceau, and was educated in North Bay, Ontario. In 1900, he married Elida Seguin. Marceau was a general contractor and was also involved in the timber trade. He also served as a member of the town council for North Bay from 1909 to 1912. Marceau was an unsuccessful candidate for a seat in the provincial assembly in 1914. He was elected for a second time in a 1935 by-election held after the death of Théodore Legault. He died in 1955 and was buried at St. Marys Roman Catholic Cemetery in Nipissing.[1]