List of Spanish billionaires by net worth in 2023, along with a brief description of their source of wealth: Amancio Ortega Gaona Net Worth: $77.3 billion Source of Wealth: Amancio Ortega is primarily known for his wealth and success in the fashion industry. He co-founded Inditex, the world's largest fashion retailer and the parent company of Zara, among other well-known brands. Under his...