1. Tourism: This is the most important industry in Greece, accounting for about 20% of the country's GDP. Greece is a popular tourist destination due to its rich history, culture, and beautiful beaches.
2. Shipping: Greece has a long tradition of seafaring, and its shipping industry is one of the largest in the world. Piraeus, near Athens, is the country's largest port.
3. Agriculture: Greece produces a variety of agricultural products, including olives, grapes, citrus fruits, and tobacco. The country is also a major producer of olive oil.
4. Manufacturing: Greece's manufacturing sector is relatively small, but it produces a variety of goods, including food and beverages, textiles, and chemicals.
5. Mining: Greece has a number of mineral resources, including bauxite, lignite, and magnesite. The country is also a major producer of marble.