Daniel MacCarthy (Glas) (Irish Dónaill Mac Cárthaigh; 28 June 1807 – 9 April 1884) was an author of historical fiction, Irish history and biography, born in London of Irish descent. MacCarthy was in correspondence with a large circle of archaeologists, antiquarians, and early pioneers of Irish scholarship during the Irish historical awakening of the 19th century, as evidenced in letters found in collections such as the Royal Irish Academy and Cork City and County Archives.