title: HMCS Beauharnois
text: # HMCS Beauharnois
  
  Several units of the Royal Canadian Navy that have been named HMCS Beauharnois.
  
  * HMCS Beauharnois (K662) (I), a River-class frigate renamed Prestonian before commissioning, that served in the Battle of the Atlantic during the Second World War.
  * HMCS Beauharnois (K540) (II), a Flower-class corvette that served in the Battle of the Atlantic during the Second World War.
  
  ## Battle honours
  
  * Atlantic, 1944–45
  