This paper, which is of comparative interest in professionalism and professional development, reports on Greek primary school teachers' views on specific aspects of the aforementioned issues. A total of 234 participants provided survey data, using anonymously filled-in questionnaires during the school year 2011-2012. More specifically, by examining teachers' responses to five parameters of each case, we found out that, regarding professionalism, most teachers tended to score highly the importance of collaboration with their colleagues, parents and students, as well as their pedagogical concern for the students and their achievement. Regarding professional development, the demand for lifelong education and training, and for studying specific educational topics, was underlined. The teachers of our sample highlighted the great contribution of professionalism and professional development in their school routine. Moreover, they were aware of the complexities of professionalism and professional development and they closely related them with their personal development and the quality of their work at school. This survey confirmed that teachers' professionalism and professional development is a universal phenomenon.