陛下主计长（HM Paymaster General）是英国的一个政府职位。主计长掌管陛下主计长办公室，它持有在英格兰银行的以政府部门和经选择的其它公共机构的名义被设立的账户。可从统一基金中得到的款项而后被纳入陛下主计长办公室账户，从那里款项被相应的机构使用。陛下主计长办公室通过一个电子存款系统为它的客户经营一整套账户和存款合约服务，包括支票和存款、银行家自动结算服务和结算所自动支付系统服务。

当此职位由财政部的一位大臣担任时，它在财政部排第三位，在财政大臣和财政部首席秘书之后。此职位在1836年由军队主计长、海军司库、切尔西医院主计长和司库和军械总局司库四职位的合并而被创设。从1848年至1868年，此职位由贸易委员会副主席兼任。

Her Majesty's Paymaster General or HM Paymaster General was a ministerial position in the United Kingdom. The Paymaster General was in charge of the Office of HM Paymaster General (OPG), which held accounts at the Bank of England on behalf of Government departments and selected other public bodies. Funds which were made available from the Consolidated Fund were then channelled into OPG accounts, from where they were used by the relevant body. OPG operated a full range of accounts and banking transaction services, including cheque and credit, BACS and CHAPS services for its customers via an electronic banking system. Integration of OPG accounts held with commercial banks was provided by the private company Xafinity Paymaster.