Margaret Markvardt

{{Short description|Estonian swimmer (born 2000)}}

{{Infobox swimmer

| name = Margaret Markvardt

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| national_team = {{EST}}

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| birth_date = {{birth date and age|2000|4|1|df=yes}}

| birth_place = Tallinn, Estonia

| height = 170 cm

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Margaret Markvardt (born 1 April 2000) is an Estonian backstroke, butterfly, freestyle and medley swimmer. She is 28-time long course and 22-time short course Estonian swimming champion. She has broken 12 Estonian records in swimming, including relay races. {{cite web|url=https://www.esbl.ee/biograafia/Margaret_Markvardt|title=Biography at esbl.ee|publisher=|date=|accessdate=14 Dec 2017|language=Estonian}}

In 2018, she competed in the girls' 50 metre backstroke event at the 2018 Summer Youth Olympics held in Buenos Aires, Argentina.{{Cite web|title=Girls' 50 metre backstroke|url=http://www.fina.org/competition-detailed-results/youth-olympic-games-buenos-aires-2018-women-50m-backstroke/event|url-status=live|archive-url=https://web.archive.org/web/20200108174539/http://www.fina.org/competition-detailed-results/youth-olympic-games-buenos-aires-2018-women-50m-backstroke/event|archive-date=8 January 2020|access-date=9 August 2020|website=2018 Summer Youth Olympics – FINA.org}} She did not qualify to compete in the semi-finals.