Sex toys are easily accessible in many countries in the Western world. Yet, cross-country studies on sex toy ownership and use and their association with relationship, sexual, and life satisfaction are rare. Using a cross-country convenience sample of 11,944 respondents from six European countries (Denmark, Sweden, Norway, Finland, France, UK), we investigated the rate and factors linked to sex toy ownership and use and their associations with sexual, relationship, and life satisfaction. Data were collected in May and June 2022 through respondent panels by Cint, a market research software platform. Participants received an e-mail invitation for the study and completed an online self-report survey. We found that more than half of respondents owned or had owned a sex toy, with the most common sex toys owned being dildos and vibrators, followed by handcuffs, penis rings, and anal sex toys. Across countries, the majority of sex toy owners reporting using these either alone or with a steady partner (55–65%) and a minority with casual partners (10–15%). Controlling for socio-demographics, parental status, sexual orientation, number of sex partners, and relationship status and length, we found that sex toy ownership and use were significantly associated with higher sexual and life satisfaction, while higher relationship satisfaction was only significantly associated with currently owning a sex toy (but not number of sex toys) and frequency of use with a partner (but not alone). Across results, we generally found little cross-country variation.