Hoài is a unisex Vietnamese given name. The name may come from the Sino-Vietnamese reading of the Chinese character 懷.
Notable people Bùi Thị Minh Hoài (born 1965), Vietnamese politician Hoài Lâm (born 1995), Vietnamese pop singer and actor Hoài Linh (born 1969), Vietnamese comedian and actor Phạm Thị Hoài (born 1960), Vietnamese writer, editor and translator Trần Văn Hoài (1929–2010), Vietnamese Roman Catholic prelate and activist Võ Hoài Nam (born 1965), Vietnamese actor