Casablanca, also known in Arabic as Dar al-Bayda (Arabic: الدَّار الْبَيْضَاء, romanized: ad-Dār al-Bayḍāʾ, [adˈdaːru ɫbajdˤaːʔ], lit.: "White House"; Berber languages: ⵜⴰⴷⴷⴰⵔⵜ ⵜⵓⵎⵍⵉⵍⵜ, romanized: Taddart Tumlilt) is the largest city in Morocco and the country's economic and business center. Located on the Atlantic coast of the Chaouia plain in the central-western part of Morocco, the city has a population of about 3.71 million in the urban area, and over 4.27 million in the Greater Casablanca, making it the most populous city in the Maghreb region, and the eighth-largest in the Arab world.

Casablanca is Morocco's chief port, with the Port of Casablanca being one of the largest artificial ports in the world, and the second largest port in North Africa, after Tanger-Med (40 km (25 mi) east of Tangier). Casablanca also hosts the primary naval base for the Royal Moroccan Navy.

Casablanca is considered a Global Financial Centre, ranking 54th globally in the Global Financial Centres Index rankings for the year 2022, outperforming many cities such as New Delhi, Jakarta, Istanbul, and Mexico City. Casablanca is ranked among the Emerging International contenders, and it is considered the largest financial center in Africa. The leading Moroccan companies and many of the larger American and European corporations doing business in the country have their headquarters and main industrial facilities in Casablanca. Recent industrial statistics show Casablanca is the primary industrial zone of the nation.