This article explores the different meanings of the number ‘three’ in proverbs. According to the analysis of this article, the number ‘three’ in proverbs, while carrying the basic meaning of quantity, has more expanded meanings in Korean, Chinese and Japanese proverbs, where it may mean ‘many’, ‘all (whole)’, ‘part’, ‘small’, and even more abstracted concepts. In contrast, the number ‘three’ in the English proverbs is largely biased towards negative meanings. At the end of this study, the analysis of the number ‘three’ in proverbs through machine translation shows that machine translation has many limitations on the translation of the many meanings of the number ‘three’.