Brigadier Eric FitzGerald Dillon, 19th Viscount Dillon, CMG, DSO (1881–1946) was an Irish peer and British Army officer who served in World War I. He and his wife, Nora Juanita Muriel (née Beckett), had two children. Their son, Michael Eric Dillon, succeeded his father as the 20th Viscount Dillon. Their daughter, Pamela, married the 6th Earl of Onslow (that marriage was dissolved in 1962).