Dan I of Wallachia was a ruler in the 14th century, known for his reign from 1370 to 1383. He was part of the Basarab dynasty, which played a significant role in the formation of the Principality of Wallachia. His leadership helped to stabilize the region during a time of political turmoil. Dan I is often recognized for his efforts to strengthen the authority of the Wallachian state. He worked to consolidate power and improve relations with neighboring regions, including Moldavia and the Hungarian Kingdom. His reign laid the groundwork for future rulers in Wallachia.