Vocabulary What does おじさん (ojisan) mean? おじさん means uncle; middle-aged man. Quick factsReadingおじさんRomajiojisanLevel (estimated, JLPT framework)N5 おじさんおじさんN5 · estimated, JLPT frameworkojisanuncle; middle-aged manExample sentencesおじさんは医者(いしゃ)です。My uncle is a doctor.おじさんと魚(さかな)を食(た)べます。I eat fish with my uncle.