Thomas Ormiston CBE (29 September 1878 – 15 January 1937) was a Scottish Unionist Party Member of Parliament (MP) who represented the Motherwell constituency from 1931 to 1935.

• Craig, F. W. S. (1983) [1969]. British parliamentary election results 1918-1949 (3rd ed.). Chichester: Parliamentary Research Services. ISBN 0-900178-06-X.
• Leigh Rayment's Historical List of MPs

• Hansard 1803–2005: contributions in Parliament by Thomas Ormiston