Sébastienne Guyot (26 April 1896 – 21 August 1941) was a French engineer who specialized in aerodynamic flying.
She was born in Pont l'Abbé in the Finistère.
A teacher, Guyot resigned in 1917 to prepare for the competition of the Ecole Centrale of the Paris Lycée Jules-Ferry when she learned that the school would accepts girls into its ranks.
She graduated in 1921 from the first class of Central School of Paris to accept women.
She ranked 45th of 243 graduates (425 students were received in the contest).Also a top athlete, she participated in the 1928 Summer Olympics in Amsterdam in the 800 meters.
She was also French Cross Country Champion in 1928.
Arrested by the Germans in 1940, she died in 1941 in Paris