Isabelle Laure Gatti de Gamond (28 July 1839 – 11 October 1905) was a Belgian educationalist, feminist, and politician.
Her mother, an inspector of girl's schools, died in 1854, and the family's genteel poverty forced Isabelle to seek employment.
In 1864, with the financial assistance of the city council, she launched the first systematic courses of secondary female education (Cours d'Éducation pour jeunes filles).
Mayor of Brussels Charles Buls was a staunch supporter and assisted in the creation of an advanced, pre-university section in 1891.
Her work towards universal adult suffrage was disappointingly thwarted by the party's leadership, who suspended support for women's rights to vote in 1901.