Mayor Francis Cassidy
14th Mayor of Montreal
In office February 1873 – June 1873
Preceded by	Charles-Joseph Coursol
Succeeded by	Aldis Bernard
Member of the Legislative Assembly of Quebec for Montréal-Ouest
In office 1871–1873
Preceded by	Alexander Walker Ogilvie
Succeeded by	John Wait McGauvran
Personal details
Born	17 January 1827 Saint-Jacques-de-l’Achigan, Lower Canada
Died	14 June 1873(1873-06-14) (aged 46) Montreal, Quebec
Resting place	Notre Dame des Neiges Cemetery
Profession	lawyer

Francis Cassidy, QC (17 January 1827 – 14 June 1873) was a Canadian lawyer and politician, the Mayor of Montreal, Quebec for three months in 1873, until his term was cut short by death.

Cassidy was born at Saint-Jacques-de-l’Achigan, in what is today Quebec's Montcalm Regional County Municipality, Quebec. Despite spending childhood in a poor family, he attended Collège de l’Assomption with the support of Abbé Étienne Normandin. He began legal studies in Montreal, formally becoming a lawyer on 18 August 1848. After developing a distinguished legal career, he was designated Queen's Counsel on 5 August 1863.

He was a founder of the Institut canadien de Montréal and served as its president between 1849 and 1850 and again between 1857 and 1858. From 1871 to 1873, he served as a Conservative member for Montréal-Ouest riding during the first portion of the 2nd Legislative Assembly of Quebec.

Just months after becoming Montreal's uncontested mayor in February 1873, Cassidy died in office that June. He was entombed at the Notre Dame des Neiges Cemetery in Montreal.^[1] He never married.

• "Biography". Dictionnaire des parlementaires du Québec de 1792 à nos jours (in French). National Assembly of Quebec.
• "Francis Cassidy". Dictionary of Canadian Biography (online ed.). University of Toronto Press. 1979–2016.
• Francis Cassidy at City of Montreal
• (in French) Les archives de Radio-Canada: Francis Cassidy, maire de Montréal (2 November 1948)