Guillermo Subiabre Astorga (25 February 1903 – 11 April 1964) was a Chilean footballer.
During his career he played for Colo-Colo (1927–1934), Santiago Wanderers, and the Chile national football team.
He also participated in the 1928 Summer Olympics and in the 1930 FIFA World Cup.At Colo-Colo, Subiabre played as a striker for eight seasons, six of which were part of the amateur period and two of which were part of the professional period.
In 1934, he was recognized as a lifetime honorary player for Colo-Colo.