Þjóðfundur may refer to:

• Þjóðfundur 2009, the National Assembly of 2009
• Þjóðfundur 1851, the National Assembly of 1851

• Cisoid (disambiguation)
• C.I. solvent red 24
• Ciso Morales
• Cison di valmarino
• Cisordinol
• Cisovice
• Cisow
• Cisowa
• Cisowa (disambiguation)
• Cisowa, Lodz Voivodeship
• Cisowa, Lubusz Voivodeship
• Cisowa, Podkarpackie Voivodeship
• Cisowa, Silesian Voivodeship
• Cisowa, Łódź Voivodeship
• Cisowe
• Cisowek
• Cisowek, Augustow County
• Cisowek, Suwalki County
• Cisowek, Warmian-Masurian Voivodeship
• Cisowe, Masovian Voivodeship
• Cisowiec
• Cisowka
• Cisowka, Masovian Voivodeship
• Cisowka, Podlaskie Voivodeship
• Cisow Las