Flag and coat of arms of Normandy

The traditional flag, gules, two lions passant guardant or, is used in all Normandy. It is based on the design of arms which had been attributed by medieval heralds to William the Conqueror, ultimately related to the 12th-century coat of arms of the House of Anjou.

The three-leopards version (known in Norman as les treis cats, "the three cats") may also be seen, which is based on the coat of arms of Richard I of England. The arms De gueules aux deux léopards d'or, armés et lampassés d'azur, passant l'un sur l'autre (Gules two leopards passant gardant in pale or armed and langued azure) was described by Jacques Meurgey in 1941.^[1]

In 1939, Jean Adigard des Gautries proposed the cross of Saint Olaf, a Nordic cross flag. It is used unofficially by some associations and individuals, especially those with an interest in the Viking origins of the Normans. Another flag in the area combines the Saint Olaf and the two leopards flag, and is called the Croix de Falaise (Falaise cross).

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  Arms attributed to William the Conqueror (1066-1087).
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  Two leopard Flag
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  Three Leopard Version
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  Nordic Cross version
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  Olaf Cross and Leopards Flag (Croix de Falaise)

The three-leopard is used by some associations and individuals, especially those who support reunification of the regions. Jersey and Guernsey use three leopards in their national symbols.

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  Coat of arms of the island of Guernsey
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  Coat of arms of the island of Jersey
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  Two-leopard and three-leopard flags at a Norman language festival in Jersey.
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  Two-leopard and three-leopard flags at a concert of Norman music.
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  Coat of arms of Sark
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  "Two-leopard" flag of the island of Sark

Norman symbols can also be seen in Ireland, through the influence of Anglo-Norman noble families who settled in Ireland in the 12th and 13th centuries, following the Anglo-Norman invasion of Ireland.

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  Coat of arms of County Carlow
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  Coat of arms of Portlaoise featuring two lions passant and two fleur-de-lis

The coat of arms and flag of Normandy are present in the coat of arms and the unofficial flag of Saint Pierre and Miquelon, an overseas territory of France in North America. They symbolize the Norman heritage of the islands.

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  Flag of Miquelon-Langlade
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  Flag of Saint-Pierre and Miquelon
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  Coat of arms of Saint-Pierre and Miquelon

• Angevin coat of arms
• Coat of arms of England
• List of coats of arms of the House of Plantagenet