The inhabitants of the island are mainly engaged in agriculture, livestock, beekeeping, as well as shipping, fishing and tourism.

Several inhabitants of the island are involved in the processing of marble - Tinna Marble Craft - as marble technicians or masters, as well as in the trade of marble slabs where they export the famous Tinos marble to overseas countries. Tin marble is included in UNESCO's Cultural Heritage List.

The economy is mainly based on tourism, which during the summer months is at a high level, but also throughout the year due to the Pan-Hellenic pilgrimage of the image of the Evangelistria. The Tinians regard the Virgin Mary as their protector. It celebrates the many chapels and churches of the villages and at each feast a rich bank with food and plenty of wine is built for all pilgrims flocking from the surrounding villages and the city of Tinos.