Cybersex is a subcategory of online sexual activities (OSA) and is defined as when two or more people are engaging in sexual talk while online for the purposes of sexual pleasure and may or may not include masturbation. Cybersex is a growing phenomenon with a significant impact on participants but very little research has been done on this subject to date. This study is the first to attempt to delineate characteristics of those who engage in cybersex. Data were collected through an online questionnaire in Swedish, administered through the Swedish web portal Passagen.se. Out of the total sample (N = 1828), almost a third, both men and women, reported to have engaged in cybersex. A logistic regression analysis showed that age, sex, and sexual orientation were important demographic variables to consider when investigating cybersex. A comparison of interval data showed those engaging in cybersex to have a higher likelihood of spending more time online for OSA and having more offline sex partners than those not engaging in cybersex.