Lajos Werkner (23 October 1883 – 12 November 1943) was a Hungarian Olympic champion sabre fencer.

Wernker trained at the Nemzeti Vívó Club (NVC) in Budapest.

[2] Werkner won team gold medals at the 1908 Olympics in London at 24 years of age, and at the 1912 Olympics in Stockholm at 28 years of age, placing sixth-seventh individually.

[8] After retiring from competitions in 1914, Werkner remained active as a sports official.

[2] In 1999 Werkner was inducted into the International Jewish Sports Hall of Fame.