Siméon-François Berneux (14 May 1814 – 8 March 1866) was a French Catholic missionary to Asia, and a member of the Paris Foreign Missions Society who was canonized as a saint.

Siméon-François Berneux was born in Château-du-Loir on 14 May 1814 and entered the Seminary of Foreign Missions in 1831 at the age of seventeen.

Berneux sailed from Shanghai to Korea in January 1856 on a Chinese ship, arriving in Korean waters on 15 March.

Entering the city on foot, Berneux and his company were taken to the house of Marie-Nicolas-Antoine Daveluy, a French priest who had come to Korea along with Bishop Ferréol.

The deaths of Berneux and other Catholic missionaries in Korea was followed by a French punitive expedition which reinforced the Korean policy of isolationism.

Berneux's spiritual writings were approved by theologians on 13 May 1914, and his cause was formally opened on 13 November 1918, granting him the title Servant of God.