威廉·华莱士（英语：William Wallace，中古盖尔语：Uilliam Uallas；现代苏格兰盖尔语：Uilleam Uallas；1272年－1305年8月23日），是苏格兰的骑士、贵族、爱国人士，他在苏格兰独立战争中领导了一支反抗武装力量。

1296年，英格兰吞并苏格兰，他在一次口角后带人攻击并杀死治安官William de Heselrig，并带领苏格兰人民与英格兰展开斗争，希望能脱离英格兰的统治，有关他妻子被Heselrig杀死的说法并非史实。华勒斯与安德鲁·莫瑞（Andrew Moray）联兵在1297年的史特灵桥之役中获得大胜利，并且成为苏格兰护国主（Guardian of Scotland）。之后继续挥军南下进攻英格兰北部，并洗劫约克郡。在次年（1298年）的福尔柯克之役（Battle of Falkirk）华勒斯遭到惨败。1305年，华勒斯因被部下出卖而在靠近格拉斯哥的罗伯伊斯顿（Robroyston）被逮捕，并被交到英王爱德华一世手上，以叛国罪之名处以绞刑、剖腹取脏、车裂之刑。

Sir William Wallace (Gaelic: Uilleam Uallas; Norman French: William le Waleys; died 23 August 1305) was a Scottish knight who became one of the main leaders during the Wars of Scottish Independence.

Along with Andrew Moray, Wallace defeated an English army at the Battle of Stirling Bridge in September 1297. He was appointed Guardian of Scotland and served until his defeat at the Battle of Falkirk in July 1298. In August 1305, Wallace was captured in Robroyston, near Glasgow, and handed over to King Edward I of England, who had him hanged, drawn, and quartered for high treason and crimes against English civilians.