Magnus II may refer to:
Magnus II of Norway (1048–1069), King of Norway from 1066 to 1069 Magnus Barefoot (1073–1103), King of Norway from 1093 to 1103 Magnus II, Earl of Orkney (c. 1184 – 1239) Magnus II, Duke of Brunswick-Lüneburg (c. 1328 – 1373), called Magnus with the necklace Magnus Henriksson, King of Sweden from 1160 to 1161 Magnus Ladulås (c. 1240– 1290), King of Sweden from 1275 to 1290 Magnus Eriksson (1316–1374), King of Sweden (1319–1364) and Norway (1319–1355) Magnus II, Duke of Mecklenburg (1441–1503), Duke of Mecklenburg-Schwerin from 1477 to 1503 Magnus II, Duke of Saxe-Lauenburg (1543–1603)