宫务大臣（英语：Lord Chamberlain），又称内廷宫务大臣（英语：Lord Chamberlain of the Household），是英国皇家内廷其中一个首长官位，这个官位与另一国务重臣掌礼大臣（Lord Great Chamberlain）的英文名称相近，但负责的事务不同。

担任宫务大臣的人士通常都是枢密院顾问官和贵族，在1782年以前更是内阁阁揆之一。在1924年以前，宫务大臣一职透过政治任命委任。宫务大臣是宫内事务主事者，通常负责筹办宫内大小活动，是皇家内廷的资深官员。

宫务大臣一职最早源于中世纪，当时已设有英皇内侍（King's Chamberlain），担任君主在枢密院和国会的发言人。

The Lord Chamberlain or Lord Chamberlain of the Household is the senior officer of the Royal Household of the United Kingdom, overseeing the departments which support and provide advice to the Sovereign of the United Kingdom.

The Lord Chamberlain is always sworn of the Privy Council, is usually a peer and before 1782 the post was of Cabinet rank. Until 1924 the position was a political one. The office dates from the Middle Ages, when the King's Chamberlain often acted as the King's spokesman in Council and Parliament.