Halvdan

Halvdan is a masculine given name. Notable people with the name include:


 * Halvdan Aarsrud (1878–1925), Norwegian bailiff and politician for the Labour Party
 * Halvdan the Black (c. 810 – c. 860), ninth-century king of Vestfold
 * Halvdan Wexelsen Freihow (1883–1965), Norwegian priest and culturist
 * Halvdan (runemaster), runemaster in mid-11th century Södermanland, Sweden
 * Lie, Trygve Halvdan (1896–1968), Norwegian politician, labour leader, government official and author
 * Halvdan Holbø (1907–1995), Norwegian painter
 * Halvdan Koht (1873–1965), Norwegian historian and politician representing the Labour Party
 * Halvdan Ljøsne (1929–2006), Norwegian painter
 * Halvdan Sivertsen (born 1950), Norwegian singer-songwriter and guitarist
 * Halvdan Skard (born 1939), Norwegian politician for the Labour Party
 * Halvdan Eyvind Stokke (1900–1977), Norwegian railway director and politician