Louis-Joseph Beaussier de Lisle (15 March 1701 – June 4, 1765) was a career naval officer from one of the oldest families of Toulon, France.

Returning to France, he engaged two British ships at Fort Louisbourg and badly damaged them.

In 1758, he commanded a ship in a squadron that sailed to Louisbourg to assist governor Drucour in its defence.

After the 2nd Siege of Louisbourg, the fortress fell to the British on July 27, 1758 and Beaussier was taken prisoner with the rest of the garrison.

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