The Gare de l'Est, officially Paris Est, is one of the seven large mainline railway station termini in Paris, France. It is located in the 10th arrondissement, not far southeast from the Gare du Nord, facing the Boulevard de Strasbourg, part of the north–south axis of Paris created by Georges-Eugène Haussmann.

The railway from Paris-Est to Strasbourg-Ville is a 493-kilometre-long railway line that connects Paris to Strasbourg via Châlons-en-Champagne and Nancy, France. Officially, the line does not start at the Gare de l'Est in Paris: the first 9 km until Noisy-le-Sec is shared with the railway from Paris to Mulhouse. The railway was opened in several stages between 1849 and 1852. The opening of the LGV Est high speed line from Paris to Baudrecourt in Lorraine in 2007 has decreased the importance of the section Paris–Sarrebourg for passenger traffic.