| William Samuel Fyffe | |
| Office1: | Chairman of Ways and Means and Deputy Speaker of the Northern Ireland House of Commons |
| Term Start1: | 1955 |
| Term End1: | 1969 |
| Predecessor1: | Terence O'Neill |
| Successor1: | Walter Scott (Northern Ireland politician) |
| Office2: | Member of Parliament for North Tyrone |
| Term Start2: | 1943 |
| Term End2: | 1969 |
| Predecessor2: | James Fulton Gamble |
| Successor2: | William Samuel Fyffe |
| Birth Date: | 18 February 1896 |
Thomas Lyons (18 February 1896 – 16 May 1985) was a unionist politician in Northern Ireland.
Lyons studied at Albert Agricultural College in Glasnevin, then emigrated to Australia in 1922. He returned to Ireland in 1939, and was elected for the Ulster Unionist Party in North Tyrone in 1943. At the 1945 general election, he stood unsuccessfully in Fermanagh and Tyrone. He served as Chairman of Ways and Means and Deputy Speaker of the Northern Ireland House of Commons from 1955 until 1969, when he was deselected by his constituency association and stood down. In 1961, he served as High Sheriff of County Tyrone.[1]