Alexander Gibson was remembered as a generous philanthropist as well as a "hard-driving entrepreneur". He was recognized as a Person of National Historic Significance by the Canadian government in 2007. The citation noted that he was "a pivotal figure in the economy of the Maritimes at a time of transformation and integration within the national economy" and that he "left an important legacy of railway and industrial infrastructure in his province". His Family Plot in the Alexander Gibson Memorial Cemetery, 351 Canada Street, Fredericton was declared an Historic Place in 2010.