ويليام الثانى (ar), Guglielmo II (br), Guillem II de Sicília (ca), Vilém II. Sicilský (cs), Vilhelm 2. af Sicilien (da), Wilhelm II. (de), William II (561-585/1166-1189) (en), Guillermo II de Sicilia (es), Guillaume II de Sicile (fr), II. Vilmos szicíliai király (hu), William II dari Sisilia (id), Guglielmo II di Sicilia (it), グリエルモ2世 (ja), 굴리엘모 2세 (ko), Guillelmus II (la), Vilhelm II av Sicilia (nb), Willem II van Sicilië (nl), Wilhelm II Dobry (pl), Guilherme II da Sicília (pt), Guillaume al II-lea al Siciliei (ro), Вильгельм II Добрый (ru), Vilhelm II av Sicilien (sv), Вільгельм II Добрий (uk), 古列尔莫二世 (zh)
William II (1155 – 11 November 1189), called the Good, was king of Sicily from 1166 to 1189. William's character is very indistinct.
Lacking in military enterprise, secluded and pleasure-loving, he seldom emerged from his palace life at Palermo (en)