As a descriptive one, this research was to evaluate the literacy development among Muslim countries. The required data for this research were collected from related documents and were analyzed through using secondary method. Results showed that 78% of men, 64% of women, 71% of total numbers were literate and 267 million people were recognized illiterate. However, among Muslim countries, the scale of men's literacy development went to a middle situation and for women; it was relatively in a low level. It showed that the literacy development among Islamic countries was totally in an average level.