Lucien Mérignac, French fencer (d. 1941)

Lucien Mérignac (5 October 1873 – 28 February 1941) was a French fencer who competed in the late 19th century and early 20th century. He participated in Fencing at the 1900 Summer Olympics in Paris and won the gold medal in the masters foil, defeating fellow French fencer Alphonse Kirchhoffer in the final.