Portugal competed at the 1948 Summer Olympics in London, England.

A delegation of forty eight competitors participated in eight sports, with an equestrian and sailing teams winning both a bronze and Portugal's first Olympic silver medal, respectively.

[1] This was also the first Olympics where this nation won more than one medal.

Portugal had 14 male rowers participate in two out of seven rowing events in 1948.

[2] Five shooters represented Portugal in 1948.