This study investigates the extent of science teachers' knowledge of canned foods. In the study, quantitative research design was adopted. An electronic questionnaire was administered to 56 teachers from various majors of Science, and from medical specialties on voluntary basis that were selected using purposive sampling method. In addition, 10 interviews were conducted with 10 randomly selected teachers among the participant teachers in order to clarify the effects of gender and monthly income on the choice of canned foods in the market, particularly during the time of COVID-19 pandemic. Results revealed that there were significant differences in participant's knowledge of nutrition labels for the canned foods attributed of gender in most of the questions. On other side, there were no significant differences in participant's knowledge of nutrition labels for the canned foods attributed to monthly income.