Sofie Herzog (née Dalia, Delia or Deligath,[1] February 4, 1846 – July 21, 1925) was an early Texas physician and was the first woman to work as the head surgeon in the American rail industry.

[9] She also built her own home, where she also treated patients of all races and began to ride horses astride, wearing split skirts.

[10] This method of removing bullets caught the attention of the South Texas Medical Society (STMS), who invited her to speak at their conference.

[2] She also opened a library and built an Episcopal Church after changing her religion from Catholicism due to a "dispute with a priest over the condition of the Catholic Cemetery.

[13] The eastern officials of the railroad found out that a woman had been hired, and asked her to quit; Herzog refused, saying that they could fire her if she failed to do her job.

[16] She remarried in 1913, to the owner of Ellersly Plantation, Colonel Marion Huntington, and both parties filed prenuptial agreements in order to retain separate control of their properties.

[1] Herzog added his last name to hers on her business cards,[18] moved into his house, and commuted to her office in her Ford car.