Fanny Allen
| Frances Margaret "Fanny" Allen RHSJ | |
|---|---|
| Personal life | |
| Born | November 13, 1784 | 
| Died | September 10, 1819 (aged 34) | 
| Nationality | American | 
| Religious life | |
| Religion | Catholic | 
| Order | Religious Hospitallers of St. Joseph | 
| Profession | May 18, 1811 | 
Frances Margaret "Fanny" Allen, RHSJ (November 13, 1784 – September 10, 1819) was the first New England woman to become a Catholic nun. The daughter of Revolutionary War officer Ethan Allen, she converted to Catholicism and entered the Montreal convent of the Religious Hospitallers of St. Joseph in 1811.