History is one of the teaching subjects studied by Bachelor of Education Arts students at the University of Nairobi. In the last five years, there has been a tremendous increase in the number of students specializing in History as a teaching subject. This paper therefore has examined factors influencing students' selection of History as career subject. The specific objectives were to examine the factors that influenced students' specialisation in History as a career subject and to assess students' attitude towards pursuing a career in History after university education. The study was based on across-sectional survey design. A structured questionnaire was used to collect data from 110 students at the University of Nairobi. Data were analysed quantitatively using SPSS and presented in form of tables. Findings of the study revealed that personal interests, parental guidance, career guidance and influence of lecturers all had an impact on students' specialisation in History. The findings of the study further pointed out that some students had trouble in selecting specialisation subjects due to lack of proper guidance. The study, therefore, recommends proper guidance of students on subject specialisation.