Comprehensive sex education from schools and parents can reduce adolescent sexual risk. Little is known about the associations between adolescent sex education and sexual satisfaction among young adults--particularly lesbian, gay, bisexual, and other sexual minority (LGB+) young adults. We examined how adolescent sex education (comprehensive versus abstinence-only) was associated with young adult sexual satisfaction (sexual contentment and sexual communication satisfaction). More comprehensive school-based sex education had a stronger association with sexual contentment and communication satisfaction in young adulthood for heterosexual participants than LGB+ participants. More comprehensive family-based sex education was associated with higher communication satisfaction for all participants.