Necarne Castle, also known as Castle Irvine, is a Victorian gothic house near Irvinestown in County Fermanagh, Northern Ireland. The two-storey façade was designed by John Benjamin Keane and was completed in 1835. A castle was originally built on the site around 1619 by a Scottish planter called Gerard Lowther. In the 1990s the Department of Agriculture, Environment and Rural Affairs signed a 25 year lease on the property to use it as an equine training centre which ran until 2023.