Antoine Castonguay

{{Short description|Canadian politician (1881–1959)}}

{{Use Canadian English|date=January 2023}}

{{Infobox officeholder

| honorific-prefix =

| name = Antoine Castonguay

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| office = Member of the Legislative Assembly of Quebec for Roberval

| predecessor = Émile Moreau

| successor = Georges Potvin

| term_start = 1935

| term_end = 1939

| birth_date = {{birth date|1881|6|14}}

| birth_place = Sainte-Hélène, near Kamouraska, Quebec

| death_date = {{death date and age|1959|5|11|1881|6|14}}

| death_place = Chicoutimi, Quebec

| nationality =

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| party = Action libérale nationale
Union Nationale

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Antoine Castonguay (June 14, 1881 – May 11, 1959) was a politician in Quebec, Canada and a Member of the Legislative Assembly of Quebec (MLA).{{QuebecMNAbio|castonguay-antoine-2463}}