Duke Ulrich of Mecklenburg (c. 1480–1530) was a nobleman from the House of Mecklenburg, a prominent family in northern Germany. He ruled as Duke of Mecklenburg from 1503 until his death, overseeing a period marked by political challenges and territorial disputes. His reign was characterized by efforts to strengthen his duchy and maintain its independence. Ulrich was known for his involvement in the Reformation, which began in the early 16th century. He supported the spread of Protestant ideas and sought to reform the church in his territory. His actions contributed to the broader religious changes occurring in Europe during this time.