Sir John Aird, 1st Baronet was an English civil engineering contractor of the late 19th and early 20th centuries. He also served as Conservative Member of Parliament (MP) for Paddington North from 1887 to 1906, was the first Mayor of Paddington in 1900, and became an enthusiastic collector of British art.

Paddington North was a borough constituency in the Metropolitan Borough of Paddington in London which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system. It was created in 1885, and abolished for the February 1974 general election.