This research (a) investigates differences in Internet adoption; (b) identifies factors affecting Internet adoption; and (c) examines differences of Internet usage pattern between men and women in Indonesia. Using data from 714 respondents/students with various backgrounds, the research unveils that in general, Internet adoption among women are lower than that among men. Using Technology Acceptance Model (TAM), the research also finds that the Internet adoption among women is affected by perceived ease of use rather than perceived usefulness. On the other hand, the Internet adoption among men is affected by perceived usefulness rather than perceived ease of use. Men are found to have a more flexible Internet access venue when compared to women. The research also gives evidence that Internet usage pattern among men and women differs. Proportion of women who use the Internet for chatting and study-related activities is significantly larger than that of men. Conversely, proportion of men who use the Internet for reading online news, testing and downloading software, shopping, entertainment, seeking job vacancy, and visiting pornographic sites are larger than women. High cost Internet access and low access speed of the Internet and a lack of English proficiency are identified to be most severe obstacles of the Internet adoption in Indonesia.