English: Elisabeth Ludovika of Bavaria (November 13, 1801 – December 14, 1873) was a Princess of Bavaria and later Queen consort of Prussia. She was born in Munich, the daughter of King Maximilian I Joseph of Bavaria and his Queen Friederike Karoline Wilhelmine Margravine of Baden. She was the twin sister of Queen Amalie of Saxony, consort of King John I of Saxony, and sister of Sophie Friederike, Prinzessin von Bayern, mother of Emperor Franz Joseph I of Austria-Hungary; as well as Princess Ludovika of Bavaria, mother of Franz Josef's consort, Empress Elisabeth of Austria (Sisi).
On November 29, 1823, she married the future King Frederick William IV of Prussia and supported his intellectual interests, namely his attempts at artwork, which he held dear to his heart. In 1830, Elisabeth converted to Protestantism.