不动产投资信托（英语：Real Estate Investment Trust，缩写 REIT，IPA：/ɹit/）又称房地产投资信托、房产信托、地产信托；是一种类似封闭式共同基金，但投资标的物为不动产的投资工具。不动产投资信托由美国国会于1960年创造，主要是借由不动产的证券化及许多投资人的资金集资，使没有庞大资本的一般投资人也能以较低门槛参与不动产市场，获得不动产市场交易、租金与增值所带来的获利。同时投资人又不需要实质持有不动产标的，并可在证券市场交易，因此市场流通性优于不动产。

不动产投资信托的特点是信托主要收入来自租金，因此收益较为稳定，而信托亦必须将未来绝大部分的盈余用作派息。正因如此，不动产投资信托的派息率远高于市面一般股票。

A real estate investment trust (REIT) is a company that owns, and in most cases operates, income-producing real estate. REITs own many types of commercial real estate, ranging from office and apartment buildings to warehouses, hospitals, shopping centers, hotels and even timberlands. Some REITs also engage in financing real estate. Created by the U.S. Congress in 1960, REITs were designed to provide a real estate investment structure similar to the structure mutual funds provide for investment in stocks. REITs are strong income vehicles because REITs must pay out at least 90 percent of their taxable income in the form of dividends to shareholders.