| Birth Date: | 27 February 1856 |
| Death Place: | London, England |
| Occupation: | Politician |
| Children: | 4, including Frederick Alfred Pile |
| Party: | Irish Unionist Alliance |
| Office1: | Lord Mayor of Dublin |
| Term Start1: | 1900 |
| Term End1: | 1901 |
| Predecessor1: | Daniel Tallon |
| Successor1: | Timothy Harrington |
| Office2: | Sheriff of Dublin City |
| Term2: | 1898 |
Sir Thomas Devereux Pile, 1st Baronet (27 February 1856 – 17 January 1931) was an Irish politician. He was a member of the Irish Unionist Alliance.
Thomas Devereux Pile was born on 2 February 1856, the son of Thomas Pile and Anne Poole. He was educated at Wesley College, Dublin.[1] His brother was the noted builder James Philip Pile.[2]
He married Caroline Maude Nicholson on 3 May 1882, and they had four children, including Frederick Alfred Pile.[3]
He was a member of Dublin Corporation for the Fitzwilliam ward, and became the Lord Mayor of Dublin in 1900.[4] As Lord Mayor, he welcomed Queen Victoria to Dublin in 1900 when she came to pay tribute to the Irish troops who fought in the Boer War.[5] He was created 1st Baronet Pile, of Kenilworth House, Rathgar, County Dublin on 24 September 1900. He was the last titled person and last unionist politician to be Lord Mayor of Dublin. He held the office of Sheriff of Dublin City in 1898.[6]
Thomas Devereux Pile died in London on 17 January 1931.[1]
| Escutcheon: | Azure three piles Argent on a chief Ermine a castle Proper between two harps Or. |
| Crest: | On a crest coronet Or charged with a cross bourdonée Azure a pelican with wings endorsed and inverted Proper. |
| Motto: | Sine Labe Nota[7] |