Queen Frederica or Queen Frederika may refer to:

• Frederica Louisa of Hesse-Darmstadt (1751–1805), Queen of Prussia
• Frederica of Mecklenburg-Strelitz (1778–1841), Queen of Hanover
• Frederica of Baden (1781–1826), Queen of Sweden
• Frederica of Hanover (1917–1981), Queen of the Hellenes
• SS Queen Frederica, a Chandris Line cruise ship

This disambiguation page lists articles associated with the title Queen Frederica.
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