Thomas | |
|---|---|
 Thomas (left) with St. George (right) | |
| Earl of Lancaster, Leicester, Derby, Lincoln and Salisbury | |
| Predecessor | Edmund Crouchback, 1st Earl of Lancaster |
| Successor | Henry, 3rd Earl of Lancaster |
| Born | c. 1278 |
| Died | 22 March 1322 (aged ~43–44) Pontefract, Yorkshire |
| Cause of death | Execution by beheading |
| Noble family | Lancaster |
| Spouse(s) | Alice de Lacy, 4th Countess of Lincoln (m. 1294; div. c. 1318) |
| Father | Edmund Crouchback |
| Mother | Blanche of Artois |
Thomas, 2nd Earl of Lancaster (c. 1278 – 22 March 1322) was an English nobleman of the first House of Lancaster of the royal Plantagenet Dynasty. He was Earl of Lancaster, Leicester, and Derby from 1296 to 1322, and Earl of Lincoln and Salisbury jure uxoris from 1311 to 1322. As one of the most powerful barons of England, Thomas was one of the leaders of the baronial opposition to his first cousin, King Edward II.