To use the Internet for sex educational purposes and for sex information has been recognised by prior research as benefits of the technological development and important areas to investigate, but few empirical studies have so far been conducted. The purpose of this study was to identify those who use the Internet to seek information about sexual issues and to examine the reasons for using the Internet for this purpose. A total of 1913 respondents completed an online Swedish questionnaire about Internet sexuality and the 1614 who reported using the Internet for sexual purposes were selected for analysis in the current study. More than one-half of these respondents claimed to use the Internet to seek information about sexual issues. The results showed that men and women of all ages used the Internet for this purpose, suggesting that the need for sexual education persists even in the adult years. The reasons for seeking information were primarily to get knowledge about the body, about how to have sex, and out of curiosity. Knowing who seeks information about sexuality on the Internet and the reasons why may be helpful in identifying the needs of different groups of individuals as well as tailoring the information provided, both online and offline.