Robert Lester (ca 1746 – July 12, 1807) was a businessman and political figure in Lower Canada.
He became a merchant there, importing cloth and spirits, exporting wheat, supplying provisions to the army and providing small loans to individuals.
With his nephew, Robert Morrogh, as partner, Lester's business expanded into the timber trade; the partners had ships built for use by the business and set up a distillery and a brewery.
As a Roman Catholic, he was able to cultivate close ties with the Quebec clergy, including Bishop Joseph-Octave Plessis.
Although on the surface the company appeared to be doing well, it had overextended itself financially and went bankrupt in 1807, a common fate of businesses importing goods at that time.