Alexandre Welter

{{short description|Brazilian sailor}}

{{use dmy dates|date=October 2022}}

{{Infobox sailor

| name = Alex Welter

| image =

| caption =

| full_name = Alexandre Welter

| birth_date = {{birth-date and age|30 June 1953}}

| birth_place = São Paulo, Brazil

| death_date =

| death_place =

| height = 186 cm

| show-medals = yes

| medaltemplates =

{{MedalSport | Men's sailing}}

{{MedalCountry | {{BRA}} }}

{{MedalCompetition | Olympic Games }}

{{MedalGold | 1980 Moscow | Tornado }}

}}

Alexandre "Alex" Welter (born 30 June 1953) is a Brazilian sailor and Olympic champion. He won a gold medal in the Tornado Class at the 1980 Summer Olympics in Moscow,{{cite sports-reference |title=Alexander Welter |url=https://www.sports-reference.com/olympics/athletes/we/alexander-welter-1.html |archive-url=https://web.archive.org/web/20200417185915/https://www.sports-reference.com/olympics/athletes/we/alexander-welter-1.html |url-status= dead |archive-date=17 April 2020}}{{cite web |url=http://www.databaseolympics.com/games/gamessport.htm?g=20&sp=YAT |title=1980 Summer Olympics – Moscow, Soviet Union – Sailing |archive-url=https://web.archive.org/web/20070827094711/http://www.databaseolympics.com/games/gamessport.htm?g=20&sp=YAT |archive-date=27 August 2007 |website=databaseOlympics.com |access-date=4 February 2008}} alongside Lars Sigurd Bjorkstrom.