Lord Thomas may refer to:
Miles Thomas, Baron Thomas (1897–1980), peer and aviation executive John Thomas, Baron Thomas of Cwmgiedd (born 1947), British judge Martin Thomas, Baron Thomas of Gresford (born 1937), Liberal Democrat peer, lawyer and former Deputy High Court judge Peter Thomas, Baron Thomas of Gwydir (1920-2008), Conservative politician Terence Thomas, Baron Thomas of Macclesfield (1937–2018) Labour Co-op peer and retired banker Hugh Thomas, Baron Thomas of Swynnerton (1931–2017), Crossbench peer, historian and former diplomat
See also Susan Thomas, Baroness Thomas of Walliswood (born 1935) Celia Thomas, Baroness Thomas of Winchester (born 1945) Dafydd Elis-Thomas (Baron Elis-Thomas) (born 1946)