Hauptpost Frankfurt, Architectural monument in Frankfurt Oder, Germany.

Hauptpost Frankfurt is a neo-Gothic brick complex built 1899–1902 as the Kaiserliche Oberpostdirektion, grouped around two inner courtyards. The three-storey main building has red brick facades in medieval brick size, rich tracery, stepped gables with rosettes and a battlement-like top; the base and cellar window surrounds are Silesian granite. The obtuse corner of Logen- and Lindenstraße is marked by a portal with acanthus-decorated wimpergs, a clock in the gable and a slender roof turret with bell.

The building was constructed in the 19th century when postal services expanded across Prussia, reflecting the construction traditions of that era. After World War II, it continued to serve as a communication hub even during Germany's division.

The building reflects the importance of postal services in the city's identity, and its classical facade still shapes the downtown appearance today. This place represents a connection between everyday communication and architectural heritage.

The complex stands in the old town at the corner of Lindenstrasse and Logenstrasse, its main entrance on Lindenstrasse with a double portal and a large carriage passage. The building is no longer an active post office; the postal authority left in 1995. The Stephan lime tree and its granite boulder with dedication inscription stand north of the main entrance.

The neo-Gothic brick facades hide a detail tied to the building's namesake: a linden planted in memory of Heinrich von Stephan, the "Stephan-Linde", stands on the grounds, and since 1989 a granite boulder with a dedicatory inscription has stood north of the main entrance on Lindenstraße.