title: Duncan Sinclair
text: # Duncan Sinclair
  
  Duncan Sinclair may refer to:
  
  * Duncan Sinclair (Conservative politician) (1869–1951), Conservative member of the Canadian House of Commons
  * Duncan James Sinclair (1867–1943), Liberal party member of the Canadian House of Commons
  * Duncan G. Sinclair (born 1933), American-born Canadian academic
  