西敏圣彼得皇家书院（英语：The Royal College of St. Peter in Westminster），简称西敏公学（Westminster School），座落于伦敦市中心西敏寺周边范围，是英国其中一所最有名的独立学校。

西敏公学历史可上溯至公元11世纪，历来知名校友包括本·琼森、罗伯特·虎克、克里斯多佛·雷恩爵士、约翰·洛克、杰里米·边沁、爱德华·吉朋、A·A·米恩、以及其中七任英国首相等。西敏公学传统上鼓励学生作独立批判思考，男生7岁起可入读该校附属小学，然后到13岁升读中学部；而女生年满16岁才可入读。学校约有学生750名，其中约四分一为寄宿生，寄宿生通常逢星期六上午校下课后，才会回家渡过周末。

Westminster School is an independent school within the precincts of Westminster Abbey, England. It has the highest Oxford and Cambridge acceptance rates of any secondary school or college in the world. With origins before the 12th century, the educational tradition of Westminster probably dates back as far as 960AD, in line with the Abbey's history. The school's alumni include Ben Jonson, John Dryden, Robert Hooke, Sir Christopher Wren, John Locke, Jeremy Bentham, Edward Gibbon, Henry Mayhew, A. A. Milne, Peter Ustinov, Tony Benn and seven Prime Ministers. Boys are admitted to the Under School at age seven, and to the senior school at age thirteen; girls are admitted only at sixteen. The school has around 750 pupils; around a quarter are boarders, most of whom go home at weekends, after Saturday morning school. It is one of the original nine British public schools as defined by the Public Schools Act 1868. Charging up to £7,800 for day pupils per term and £11,264 for boarders per term in 2014/15, Westminster is the 13th most expensive HMC day school and 10th most expensive HMC boarding school in the UK.