Japanese mythology is mainly based on Shintoism while Greek consists of oriental and immigrant parts. Greek deities are vindictive and unpredictable, ie human, while kami are a part of nature. Both civilizations worshiped the gods as can be seen from the examples given in the paper. Both civilizations did not run away from brother and sister marriages but these were frequent. According to Japanese and Greek mythology, as it was initially the dominant force in the world and the first cause of everything in the world. Such an attitude towards the beginning of life on earth is quite natural because people could only assume what was the origin of life. In both Greek and Japanese mythology, numerous gods who create the world appear, participate in life on earth, etc. Both cultures were characterized by polytheism, but the human attitude toward the life of the gods was quite different. The latter civilization, as already mentioned, looked at kami as a part of nature, and in Greek mythology the gods were more turned to people. In Japanese mythology, both man and woman were needed for creation, and in Greek we see that woman was the dominant sex. In the Olympic myth of creation, the fertilization of women was attributed to the wind and it is believed that it could have been followed by accidental ingestion of insects. The origin of man is not precisely defined in Japanese mythology (it is more focused on the imperial family), but just as there are more myths about the origin, Greece also has more myths about the origin of humans. Prometheus created humans and gave them fire when they needed it the most. His son, Deucalion, and his wife Pira repopulated the land after the flood of Zeus. Nonhuman life forms of Japanese mythology such as, tengu (goblins), oni (demons) and kappa (water demons) are often portrayed as lost and mostly not evil. Nymphs are very well known in Greek mythology, mostly appearing as supporting roles. These deities are beautiful girls who - although they are a small deity - were worshiped like other gods. We distinguish three types of nymphs, namely oceanids, nereids and naids. Each of them belongs to one natural phenomenon.