Lajos Csejthey (Hungarian: ['l?jo? 't???jt?i]; February 14, 1895 – August 3, 1977) was a Hungarian physician and athlete, who competed in the javelin throw and the discus throw.
A six time national champion of the javelin throw event, he became the first Hungarian to break the 60 metres barrier in 1922, and the first sportsman from Vas County to participate at the Olympic Games in 1924.
After the Olympics Csejthey moved to Vasvár and later to Csorna, concentrating on his civil life and work as a health officier and dentist.
He died in 1977 and was buried in the Saint Anthony Cemetery in Csorna.
His memory is preserved by a plaque in the memorial park in his hometown.