Rethymno (Greek: Ρέθυμνο, [ˈreθimno], also Rethimno, Rethymnon, Réthymnon, and Rhíthymnos) is a city in Greece on the island of Crete. It is the capital of Rethymno regional unit, and has a population of more than 30,000 (near 40,000 for the municipal unit).

Today the city's main income is from tourism, many new facilities having been built in the past 20 years. Agriculture is also notable, especially for olive oil and other Mediterranean products.