Mário Simas

{{short description|Portuguese swimmer}}

{{Use dmy dates|date=August 2020}}

{{Infobox swimmer

| name = Mário Simas

| image =

| caption =

| fullname =

| nationality =

| strokes =

| club =

| collegeteam =

| birth_date = {{birth date|1922|2|16|df=yes}}

| birth_place =

| death_date = {{death date and age|2015|1|4|1922|2|16|df=yes}}{{cite web|url = https://geneall.net/pt/nome/50535/mario-travassos-alua-de-castro-simas/|title = Mário Travassos Alua de Castro Simas|publisher = Geneall|access-date = 5 December 2017}}

| death_place =

| height =

| weight =

| medaltemplates =

| show-medals =

| updated =

}}

Mário Simas (16 February 1922 – 4 January 2015) was a Portuguese swimmer. He competed in the men's 100 metre backstroke at the 1948 Summer Olympics.{{cite Sports-Reference |url=https://www.sports-reference.com/olympics/athletes/si/mario-simas-1.html |archive-url=https://web.archive.org/web/20200418120122/https://www.sports-reference.com/olympics/athletes/si/mario-simas-1.html |url-status=dead |archive-date=18 April 2020 |title=Mário Simas Olympic Results |accessdate=18 September 2016}}