Advertising columns or morris columns (French: Colonne Morris, German: Litfassaule) are cylindrical outdoor sidewalk structures with a characteristic style that are used for advertising and other purposes. They are common in the city of Berlin, Germany, where the first 100 columns were installed in 1855. Advertising columns were invented by the German printer Ernst Litfas in 1854. Therefore it is known as Litfassaule(Litfas column) in Germany, and can be found all over the country there.

In France originally built by La Societe Fermiere des Colonnes Morris, from which they derive their name, they are mostly built and maintained today by the JCDecaux company, which purchased Morris in 1986.