| Honorific-Prefix: | His Excellency |
| Joop Haex | |
| Office: | State Secretary for Defence |
| Term Start: | 18 April 1967 |
| Term End: | 6 July 1971 |
| Alongside: | Adri van Es Bob Duynstee |
| Primeminister: | Piet de Jong |
| Predecessor: | Gerard Peijnenburg |
| Successor: | Adri van Es |
| Term Start1: | 14 August 1963 |
| Term End1: | 14 April 1965 |
| Alongside1: | Adri van Es Willem den Toom |
| Primeminister1: | Victor Marijnen |
| Predecessor1: | Michael Calmeyer |
| Successor1: | Gerard Peijnenburg |
| Birthname: | Joseph Constant Eugène Haex |
| Birth Date: | 1911 11, df=y |
| Birth Place: | Maastricht, Netherlands |
| Death Place: | Wassenaar, Netherlands |
| Nationality: | Dutch |
| Party: | Christian Democratic Appeal (from 1980) |
| Otherparty: | Democratic Socialists '70 (1971–1975) Christian Historical Union (1963–1971, 1975–1980) |
| Alma Mater: | Royal Military Academy |
| Occupation: | Politician · Army Officer · Corporate director · Nonprofit director |
| Allegiance: |  Netherlands |
| Branch: | Royal Netherlands Army |
| Serviceyears: | 1935–1963 (Active duty) 1963–1971 (Reserve) |
| Rank: | Lieutenant general |
| Battles: | World War II |
Joseph Constant Eugène "Joop" Haex (24 November 1911 – 14 April 2002) was a Dutch politician of the defunct Christian Historical Union (CHU) now merged into the Christian Democratic Appeal (CDA), an army officer and lieutenant general of the Royal Netherlands Army he served during World War II and the post-war years.[1]
| Military decorations | ||||
| Ribbon bar | Decoration | Country | Date | Comment |
|---|---|---|---|---|
| War Memorial Cross | Netherlands | 5 May 1946 | ||
| Mobilisation War Cross | Netherlands | 1 June 1945 | ||
| Distinction sign for Long-term, Honest and Loyal Service | Netherlands | 14 August 1963 | Honorable discharge | |
| Honours | ||||
| Ribbon bar | Honour | Country | Date | Comment |
| Knight of the Order of the Netherlands Lion | Netherlands | 20 April 1965 | ||
| Commander of the Order of Orange-Nassau | Netherlands | 17 July 1971 | Elevated from Officer (1 September 1966) | |