Tyska Stallplan (Swedish: "German Stable Square" or literally "Plane") is a street in Gamla stan, the old town in central Stockholm, Sweden. Stretching south from Svartmangatan to Prästgatan, it is connected to Baggensgatan and Mårten Trotzigs Gränd, while forming a (somewhat) parallel street to Österlånggatan and Tyska Brinken.
By the street are the public library and the major school (Storkyrkoskolan, "School of the Great Church" (e.g. Storkyrkan)) of the told town. While named a square, it undoubtedly remains a matter of taste and definition whether this elongated open space should be regarded as a street.