Duke Henry X of Mecklenburg (1473-1521) was a member of the House of Mecklenburg, a prominent noble family in northern Germany. He ruled as Duke of Mecklenburg from 1503 until his death, overseeing a period marked by political challenges and efforts to strengthen his duchy. Henry X was known for his support of the Reformation, which significantly influenced the religious landscape of his region. He worked to consolidate power and improve the administration of his territory, contributing to the development of Mecklenburg as a significant political entity in the Holy Roman Empire.