| Sérgio Etchegoyen | |
| Office: | Secretary of Institutional Security |
| Term Start: | 12 May 2016 |
| Term End: | 1 January 2019 |
| President: | Michel Temer |
| Predecessor: | José Elito Carvalho Siqueira |
| Successor: | Augusto Heleno |
| Office1: | Chief of Staff of the Brazilian Army |
| Term Start1: | March 2015 |
| Term End1: | May 2016 |
| 1Blankname1: | Army Commander |
| 1Namedata1: | Eduardo Villas Bôas |
| Predecessor1: | Adhemar Machado Filho |
| Successor1: | Francisco Modesto |
| Office2: | Commander of the Brazilian Army Command and General Staff School |
| Term Start2: | 13 December 2006 |
| Term End2: | 6 April 2009 |
| 1Blankname2: | Army Commander |
| Predecessor2: | Luiz Eduardo Rocha Paiva |
| Successor2: | João Camilo Pires de Campos |
| Birth Name: | Sérgio Westphalen Etchegoyen |
| Birth Date: | 1 February 1952 |
| Birth Place: | Cruz Alta, RS, Brazil |
| Occupation: | Army general |
| Allegiance: |  Brazil |
| Branch: | Brazilian Army |
| Rank: | Army General |
| Serviceyears: | 1971–present |
| Commands: | 4th Mechanized Cavalry Brigade |
Sérgio Westphalen Etchegoyen (born 1 February 1952, in Cruz Alta) is a Brazilian general and former Secretary of Institutional Security, during the presidency of Michel Temer.[1]
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