The purpose of this study was to investigate preservice science teachers' favorite scientists. This study was conducted according to a screening model. The study group consisted of 199 volunteer preservice teachers who were studying in the science education department at a state university in Turkey. Of the total preservice science teachers, 56 were first year, 57 second year, 55 third year, 31 fourth year; 172 were female, and 27 were male. I asked, "Who is your favorite scientist? Why? Please, write your reason." The preservice science teachers wrote their favorite scientists along with their reasons. The data obtained was analyzed using the content analysis method. The results show that preservice science teachers named 28 different scientists. Eight scientists were Turkish-Islamic, and twenty were foreign. Twenty-seven scientists were male, and one was female. Six female preservice science teachers wrote Marie Curie as their favorite scientist. Preservice science teachers' favorite scientists were mostly foreign, both at each grade level and overall. The most frequently named favorite scientists were Aziz Sancar, Ibn-i Sina, Albert Einstein, Isaac Newton, and Nikola Tesla.