The surname Belzner is believed to have its origins in the German-speaking regions of central Europe, with the earliest known records dating back to the late Middle Ages. The name is thought to be derived from the German word "Belz," which was a variation of the name "Balthasar," a biblical name of Persian origin meaning "may Baal protect the king."

One of the earliest known references to the Belzner name can be found in a 15th-century manuscript from the town of Nuremberg, where a certain Hans Belzner is mentioned as a merchant and landowner. This suggests that the name was already well-established in that region by the 1400s.

In the 16th century, the Belzner family appears to have spread across various parts of Germany and neighboring regions. Records from this time show individuals with the name living in cities such as Leipzig, Cologne, and Strasbourg, as well as rural areas in what is now modern-day Bavaria and Saxony.

One notable individual from this period was Johann Belzner, a Protestant theologian and reformer born in Saxony in 1538. He played a significant role in the spread of Lutheran teachings throughout northern Germany and is remembered for his writings on religious doctrine and his advocacy for educational reforms.

As the centuries progressed, the Belzner name continued to be found across various parts of central and eastern Europe. In the 18th century, a certain Friedrich Belzner was a prominent merchant and landowner in the city of Breslau (now Wrocław, Poland), where he was known for his successful trading ventures and philanthropic activities.

Another individual of note was Karl Belzner, a Prussian military officer who served in the Napoleonic Wars and later became a respected military strategist and author. He was born in 1784 in the town of Stettin (now Szczecin, Poland) and wrote several influential works on military tactics and strategy.

In the 19th century, the Belzner name can be found in records from various parts of the German-speaking world, including Austria, Switzerland, and parts of what is now Poland and the Czech Republic. One notable figure from this period was August Belzner, a German-born artist and painter who lived and worked in Vienna, where he gained recognition for his landscapes and portraits.

As migration to the Americas and other parts of the world increased in the late 19th and early 20th centuries, individuals bearing the Belzner surname can be found in various countries, including the United States, Canada, Australia, and South America. While the name may have undergone some variations in spelling and pronunciation, its German roots and historical significance remain evident.