Ludwika Karolina Radziwiłł, Prussian-Lithuanian wife of Charles III Philip, Elector Palatine (d. 1695)

Princess Ludwika Karolina Radziwiłł (Lithuanian: Liudvika Karolina Radvilaitė; 27 February 1667 – 25 March 1695) was a magnate Princess of the Grand Duchy of Lithuania in the Polish–Lithuanian Commonwealth and an active reformer.