Flags with keys

City of Apeldoorn, Gelderland, Netherlands

Gmina Babimost, Poland

Customs, Belarus

Customs, China

City of Don Benito, Province of Badajoz, Spain

Hanse (Bremen), now Germany †

Staatsflagge mit mittlerem Wappen, Freie Hansestadt Bremen, Germany

Senatsflagge, Freie Hansestadt Bremen, Germany

Landesdienstflagge der Bremischen Schifffahrt, Freie Hansestadt Bremen, Germany

Seedienstflagge, Freie Hansestadt Bremen, Germany, 1921 †

Zollverwaltung, Freie Hansestadt Bremen, Germany, 1921 †

Bremerhaven, Freie Hansestadt Bremen, Germany

City of Brno-Bohunice, district of Brno, Moravia, Czech Republic

Besançon, France

City of Chop, Ukraine

Chýnov, District Tábor, region South Bohemia, Czech Republic

President of Cuba

Gibraltar, British Overseas Territory

Government Ensign of Gibraltar, British Overseas Territory

Gibraltar, 1921-1939 †

Gibraltar, 1939-1999 †

Gilze en Rijen, North Brabant, Netherlands

Gmina Głowaczów, Województwo mazowieckie, Poland

Conty of Gorzów, Lubusz Voivodeship, Poland

Heesch, North Brabant, Netherlands

Hel, Puck County, Pomeranian Voivodeship, Poland

Gmina Jodłownik, Limanowa County, Lesser Poland Voivodeship Poland.

Gmina Klucze, Olkusz county, Lesser Poland Voivodeship, Poland

Leiden, South Holland, Netherlands

Oblast Leningrad, Russia

Líšná, Rokycany district, region Plzeň, Czech Republic

Loppersum, Groningen, Netherlands

Lubań, Powiat lubański, Poland

Marca anconitana, now Italy †

De Marne, Groningen, Netherlands

Mieres, Prencipato d'Asturias, Spain

Government Ensign of Mauritius

Kreis Minden-Lübbecke, Nordrhein-Westfalen, Germany

Kanton Nidwalden, Switzerland

Norddeutscher Lloyd, Germany †

Kanton Obwalden, Switzerland

Oplany, Prague-East, Central Bohemia, Czech Republic

Ostrów Wielkopolski County, Greater Poland Voivodeship, Poland

City of Pasadena, California, USA

Pniewy, Greater Poland Voivodeship, Poland

Prague, Czech Republic

Přešovice, Vysočina District, Třebíč Region, Czech Republic

Roland-Linie, Germany †

Soest, Germany

Kreis Soest, Germany

Swiss Guards (depends on papacy), this one: reign of Pope Francis

Toruń, Kuyavian-Pomeranian, Poland

Quarter of St. Pierre of Besançon, France

Surrey, England, United Kingdom

Customs, Taiwan

City of Tartu, Estonia

Toa Baja, Puerto Rico

Val d'Aran (Vall d'Aran), Catalonia, Spain

Vatican City (for the state flag, see Holy See)

Comtat Venaissin, now Provence, France †

Větrušice, Prague-East District, Central Bohemia, Czech Republic

Vnukovo (Район Внуково), municipality of Moscow, Russia