Is it permissible to marry someone from a different Muslim sect (e.g., Sunni and Shia)?

Marrying someone from a different Muslim sect, such as a Sunni marrying a Shia, is considered permissible by the majority of Islamic scholars as long as both individuals are practicing Muslims who share the core beliefs of Islam: Tawheed, the finality of the prophethood of Muhammad ﷺ, and the Quran as the word of Allah. The real concern is not the sectarian label but the difference in aqeedah (core creed). If either spouse holds beliefs that contradict the fundamental pillars of Islam, most scholars would consider that marriage impermissible. Beyond the ruling itself, couples must have honest conversations about how they will pray at home, how they will raise their children Islamically, and whether their families will be supportive. Sectarian differences in extended families can create serious pressure on a marriage over time. Islam places great importance on compatibility in faith, values, and practice, not just in name. If you are seriously considering this step, consulting a knowledgeable Islamic scholar and seeking premarital counseling is strongly advised. Allah knows best.