Over the past three decades, numerous German research cruises have been conducted along the northwestern African continental margin, between the Azores–Gibraltar Fracture Zone in the north and the St. Paul–Las Palmas Fracture Zone in the south (North Atlantic Ocean). During 99 expeditions with RV Polarstern, Sonne, Maria S. Merian, and Meteor, multibeam echosounder data were acquired. From these raw datasets, a compiled gridded bathymetry was generated using an automated workflow, covering the region 9°-34°N and 30°-9°W. The data product integrates archive data from six multibeam systems with heterogeneous raw formats. Processing followed a script-driven workflow with three stages: (1) pre-processing (GPS outlier removal; filter design and application with MB-System), (2) processing with MB-System (mbprocess program), and (3) post-processing (interpolation to a regular grid using Generic Mapping Tools, GMT). The final dataset is provided as GeoTIFF (gridline registration) with a spatial resolution of 50 m × 50 m; spatial coverage is incomplete across parts of the study area.