Henry Pröpper

{{Short description|Dutch military officer (1906–1995)}}

{{more citations needed|date=February 2023}}

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{{Infobox officeholder

| honorific_prefix = Lieutenant admiral

| name = Henry Pröpper

| image = File:HHL Propper2.png

| image_size = 250px

| alt =

| caption =

| nickname =

| office = Chairman of the United Defence Staff of the Armed Forces of the Netherlands

| term_start = 10 May 1959

| term_end = 10 May 1962

| predecessor = Lieutenant general Heije Schaper

| successor = General Gillis le Fèvre de Montigny

| office1 = Commander of the naval forces

| term_start1 = 4 September 1956

| term_end1 = 4 May 1959

| predecessor1 = Vice Admiral F.T. Burghard

| successor1 = Vice Admiral Leendert Brouwer

| birth_name = Henry Herman Laurens Pröpper

| birth_date = {{Birth date|1906|6|18|df=y}}{{Cite web|url=https://www.openarch.nl/gld:9C961059-06DA-44E8-858F-B9CBBD1C0E6F/nl |title=Geboorte op 18 juni 1906 te Zutphen |website=www.openarch.nl |access-date=21 February 2023 |language=nl}}

| birth_place = Zutphen, Netherlands

| death_date = {{Death date and age|1995|4|5|1906|6|18|df=y}}

| death_place = Winssen, Netherlands

| placeofburial =

| allegiance = {{flag|Netherlands}}

| branch = {{navy|Netherlands}}

| serviceyears = 1926–1962

| rank = 20px Lieutenant admiral

| servicenumber =

| unit =

| commands = {{HNLMS|Soemba|1925|6}} (1943–1944)

| battles = World War II

| awards =

| relations =

| laterwork =

}}

Lieutenant admiral Henry Pröpper (18 June 1906 – 5 April 1995) was a Dutch military officer who served as Chairman of the United Defence Staff of the Armed Forces of the Netherlands between 1959 and 1962.