| Duncan Antonio Stewart Agell | |
| Office: | President of Uruguay |
| Status: | Interim |
| Term Start: | March 1, 1894 |
| Term End: | March 21, 1894 |
| Predecessor: | Julio Herrera y Obes |
| Successor: | Juan Idiarte Borda |
| Office1: | 37th President of the Senate |
| Term Start1: | 1891 |
| Term End1: | 1891 |
| Predecessor1: | Agustín de Castro |
| Successor1: | Tomás Gomensoro Albín |
| Birth Date: | 1833 |
| Birth Place: | Buenos Aires, Argentine Confederation |
| Death Place: | Montevideo, Uruguay |
| Spouse: | Delfina García Vargas |
| Children: | 8 |
| Party: | Colorado |
Duncan Antonio Stewart Agell (1833 – 1923), was a Uruguayan president of Scottish Argentine origin. He served as interim President of Uruguay for a brief time in 1894.
He was the son of a marriage between Scotsman Duncan Stewart (of Acharn) and Uruguayan Dorotea Agell. Little is known about his life, but it is known he was born in Buenos Aires, Argentina in 1833. His niece Matilde Pacheco married José Batlle y Ordóñez, who was later to become a long-serving Uruguayan President. His grand-nephews César Batlle Pacheco and Lorenzo Batlle Pacheco each served as a Deputy and Senator, and Rafael Batlle Pacheco was a notable journalist.
Later he moved to Uruguay, where he worked as a civil servant and later as a politician. He served as the Minister of Finance in the administration of Lorenzo Batlle from 1869 to 1872. In 1890 he was elected Senator. He served as the President of the Senate of Uruguay in 1891 and 1894.[1]
He was a member of the Colorado Party (Uruguay).
The presidential election of 1894 resulted in a political crisis. For twenty-one days (between March 1 and March 21) none of the candidates received the necessary 45 votes to become president. During this time, Stewart, president of the Senate, exercised power as President of Uruguay.
Finally, Stewart ceded the office to Juan Idiarte Borda who won the presidency with 47 votes, but who was to be assassinated while President.
He served as the President of the Chamber of Deputies of Uruguay in 1896.[2] Later, Stewart opposed the grab of power by Juan Lindolfo Cuestas and was not active in politics from that time.
He married Delfina García Vargas and had eight children with her. Duncan Stewart died in 1923, having lived through practically all of Uruguay's post-independence history.