Gartlage is a district of the city of Osnabrück, Lower Saxony, Germany. It is situated next to the Innenstadt.
As of late 2008 the Gartlage district was home to 2,403 households comprising 3,644 residents; a rise of 24 residents from the previous year. The district has a land area of 169.2 hectares, making it the second smallest in Osnabrück after the Innenstadt.The district is home to the Halle Gartlage, which was originally built in 1954 for auctioning cattle. Today it is also used for concerts, flea markets and various other events. Osnabrück’s biannual Jahrmärkte take place around the area of the hall. The hall used to be the location of a railway platform for special train journeys on the Osnabrück-Bremen line.