Following is a list of senators of Seine-Maritime, people who have represented the department of Seine-Maritime in the Senate of France.The department was known as "Seine-Inférieure" until 1955, when it was given the present more positive-sounding name.
Senators for Seine-Inférieure under the French Third Republic were:
Senators for Seine-Inférieure or Seine-Maritime under the French Fourth Republic were:
Senators for Seine-Maritime under the French Fifth Republic:
| In office | Name | Group or party | Notes | |
|---|---|---|---|---|
| 1959–1965 | Groupe de la Gauche Démocratique | Died in office 17 December 1965 | ||
| 1959–1968 | Groupe des Républicains et Indépendants | |||
| 1959–1973 | Groupe Union Centriste | Resigned 11 March 1973 (elected deputy) | ||
| 1959–1977 | Groupe des Républicains et Indépendants | |||
| 1959–1993 | Groupe du Rassemblement pour la République | Died in office 2 March 1993 | ||
| 1965–1968 | Groupe socialiste | Replaced Henri Paumelle 18 December 1965 | ||
| 1968–1969 | Groupe Communiste | Died in office 12 September 1969 | ||
| 1968–1986 | Groupe Union Centriste | |||
| 1969–1986 | Groupe Communiste | Replaced Léon Rogé on 13 September 1969 | ||
| 1973–1977 | Groupe Union Centriste | Replaced Jean Lecanuet on 2 April 1973 | ||
| 1977–1995 | Groupe des Républicains et Indépendants | |||
| 1977–1986 | Groupe Union Centriste | Resigned 2 April 1986 (elected deputy) | ||
| 1977–1995 | Groupe socialiste | Died in office 5 July 1995 | ||
| 1986–1988 | Groupe Communiste | Resigned 13 July 1988 (elected deputy) | ||
| 1986–1995 | Groupe Union Centriste | Replaced Jean Lecanuet on 2 April 1986 | ||
| 1986–1993 | Groupe Union Centriste | Died in office 22 February 1993 | ||
| 1988–1998 | Groupe communiste républicain citoyen et écologiste | Replaced André Duroméa 14 July 1988 Resigned 2 October 1998 | ||
| 1993–1995 | Groupe du Rassemblement pour la République | Replaced Jean Lecanuet on 23 February 1993 | ||
| 1993 | Groupe du Rassemblement Démocratique et Européen | Replaced Geoffroy de Montalembert 3 March 1993 Died in office 7 November 1993 | ||
| 1994–1995 | Groupe Union Centriste | Elected 6 February 1994 (by-election) | ||
| 1995–2004 | Groupe des Républicains et Indépendants | |||
| 1995–2004 | Groupe socialiste | |||
| 1995–2013 | Groupe socialiste et apparentés | Replaced Tony Larue 6 July 1995 Resigned 31 December 2013 | ||
| 1995-2014 | Groupe Union pour un Mouvement Populaire | |||
| 1995–2019 | Groupe Les Républicains | Resigned 30 September 2019 | ||
| 1998–present | Groupe communiste républicain citoyen et écologiste | Replaced Robert Pagès on 3 October 1998 | ||
| 2004–2007 | Groupe socialiste | Resigned 28 June 2007 (elected deputy) | ||
| 2007–2013 | Groupe socialiste et apparentés | Replaced Sandrine Hurel on 29 June 2007 Resigned 30 September 2013 | ||
| 2013-2014 | Groupe socialiste et apparentés | Replaced Alain Le Vern 1 October 2013 | ||
| 2014–present | Groupe socialiste et républicain | Replaced Marc Massion 1 January 2014 | ||
| 2004–present | Groupe Union Centriste | |||
| 2014–present | Groupe Les Républicains | |||
| 2014–present | Groupe socialiste et républicain |