LIVRARIA LELLO & IRMÃO, also known as LIVRARIA CHARDRON or simply LIVRARIA LELLO (LELLO BOOKSTORE) is a bookstore located in central Porto, Portugal.

Along with Bertrand in Lisbon, it is one of the oldest bookstores in Portugal. In 2011, the travel publishing company Lonely Planet classified Livraria Lello as the third best bookstore in the world.

Because of its unique historical and artistic value, the Lello has been recognized as one of the most beautiful bookstores in the world by various personalities and entities, cases of Spanish writer Enrique Vila-Matas, the British newspaper The Guardian and the Australian publisher of guides Lonely Planet travel.