Dermot Robert Wyndham Bourke, 7th Earl of Mayo (English: /bɜːrk/; BURK; 2 July 1851 – 31 December 1927) was an Anglo-Irish peer, styled Lord Naas (/neɪs/; NAYSS) from 1867 to 1872, who served as an Irish representative peer in the British House of Lords (1890–1921) and member of the Senate of Southern Ireland (1921–1922) and Seanad Éireann (1922–1927).

He was educated at Eton, and was an officer in the 10th Hussars and the Grenadier Guards.

[1] In 1890 he was elected as an Irish representative peer and took his seat in the House of Lords.

[2] He was appointed a Knight of the Order of St Patrick on 3 February 1905.

He was nominated by W. T. Cosgrave to the Seanad of the Irish Free State on its formation in 1922.