伦敦银行同业拆息（英文：London Interbank Offered Rate，简称LIBOR），或称伦敦同业拆放利率，是一个英国银行同业之间的短期资金借贷款的成本，原来由英国银行家协会（British Banker's Association）按其选定的一批银行，于伦敦货币市场报出的银行同业拆借利率，计算出平均指标利率。此指针利率，每个银行营业日都可能不同。

自2014年2月1日起，英国银行家协会的角色由洲际交易所集团 (ICE)属下的ICE Benchmark Administration Limited (IBA)所取代。

The London Interbank Offered Rate is the average of interest rates estimated by each of the leading banks in London that it would be charged were it to borrow from other banks. It is usually abbreviated to Libor (/ˈlaɪbɔːr/) or LIBOR, or more officially to ICE LIBOR (for Intercontinental Exchange Libor). It was formerly known as BBA Libor (for British Bankers' Association Libor or the trademark bbalibor) before the responsibility for the administration was transferred to Intercontinental Exchange. It is the primary benchmark, along with the Euribor, for short-term interest rates around the world.