Named after Petershagen; ‘Nord’ (north) set it apart from a second Petershagen station.
The halt opened in 1944 as Giebelsee – two small lakes of that name lie on either side of the line – and became Petershagen Nord in 1967. ‘Nord’ distinguished it from the former Petershagen (b Berlin) station on the line to Rüdersdorf. An earlier station called Petershagen, opened in 1872, had been renamed Fredersdorf in 1875 – because the village of Petershagen had refused to care for an injured person there.