Stiles French (December 6, 1801 – May 9, 1881) was an American teacher and founder of the New Haven Collegiate and Commercial Institute, later known as the Russell Military Academy.
After graduation, he pursued advanced scientific studies under the direction of the college for two or three years, being also connected from the Spring of 1828 with the New Haven Gymnasium, as a math teacher.
He taught in New Haven until the spring of 1831, when he accepted the position of teacher of Mathematics in the Round Hill School, at Northampton, Massachusetts, where he remained for two years.
In August, 1833, he established, with his brother, a Collegiate and Commercial School in Wooster Square, in New Haven, which he conducted for about twelve years.
After an interval of leisure he established another classical and scientific school in New Haven, which he maintained for over twenty-five years.