The Agadir Crisis, also called the Second Moroccan Crisis, or the Panthersprung, was the international tension sparked by the deployment of the German gunboat Panther, to the Moroccan port of Agadir on July 1, 1911.

Anglo-German tensions were high at this time partly due to an arms race between Germany and Great Britain which included an attempt by Germany to surpass Britain's naval supremacy. Germany's move was aimed at testing the relationship between Britain and France and possibly intimidate Britain into an alliance with her, as well as enforcing claims for compensation for acceptance of effective French control of the North African kingdom, where France's pre-eminence had been upheld by the 1906 Algeciras Conference following the Tangier Crisis (or First Moroccan Crisis) of 1905-1906.

In 1911 a rebellion broke out in Morocco against the Sultan, Abdelhafid. By early April 1911 the Sultan was besieged in his palace in Fez and the French prepared to send troops to help put down the rebellion under the pretext of protecting European lives and property. The French dispatched a flying column at the end of April 1911. On 5 June 1911 the Spanish army occupied Larache and Ksar-el-Kebir. On 1 July 1911 the German gunboat Panther arrived at the port of Agadir. There was an immediate reaction from the French and the British.

Agadir (Berber: Agadir, ⴰⴳⴰⴷⵉⵔ, Moroccan Arabic: أڭادير‎) is a major city in southwest Morocco, capital of the Agadir province (MA-AGD) and the Sous-Massa-Draa economic region. A majority of its inhabitants speak Berber as a mother tongue.

The word Agadir means in Berber "wall, masoned wall enclosing a town, fortress, town".

Agadir has a population of 678,596 (2004; census figures for the agglomeration include the nearby cities of Inezgane and Aït Melloul). The population of the city proper is estimated at 200,000. The mild winter climate (January average midday temperature 20.5°C/69°F) and good beaches have made it a major "winter sun" destination for Northern Europeans. The mayor is Tariq Kabbaj.

The city is located on the shore of the Atlantic Ocean, near the foot of the Atlas Mountains, just north of the point where the Souss River flows into the ocean.

Agadir is an important fishing and commercial port, the first sardine port in the world, (exporting cobalt, manganese, zinc and citrus).It is also a seaside resort with a long sandy beach. Because of its large buildings, wide roads, modern hotels, and European-style cafés, Agadir is not a typical city of traditional Morocco, but it is a modern, busy and dynamic town.