This study aimed to describe the general public’s understanding of and attitude toward science, focusing on the characteristics of Japanese, through an international comparison with the US and the UK. A web survey was conducted, using the same set of items for each country. Individual differences were examined as predictors of public trust in the research results, with a focus on political ideology, which has been previously shown to be strongly related to public trust in research results in the US. The analysis showed that while the Japanese public had the same level of research literacy as their counterparts in the US and the UK, their level of both scientific knowledge and public trust in research results was lower than in the two countries. The results also reveal that in Japan, political ideology was not a predictor of public trust in research results.