The Westerbork HALOGAS Survey: Data Release 1 The Westerbork Hydrogen Accretion in LOcal GAlaxieS (HALOGAS) Survey comprises deep neutral hydrogen (HI) 21-cm emission line observations of 24 nearby galaxies, along with ancillary data products such as deep optical imaging, radio continuum images, and single-dish HI data. This first data release (HALOGAS-DR1) provides the following HI data products in FITS format, for each of the 24 galaxies: High resolution (~15") data products Data cube: <galaxy_name>-HR-cube.fits Moment-0 (integrated intensity): <galaxy_name>-HR_mom0m.fits Column density: <galaxy_name>-HR_coldens.fits Moment-1 (average velocity): <galaxy_name>-HR_mom1m.fits Low resolution (~30") data products Data cube: <galaxy_name>-LR-cube.fits Moment-0 (integrated intensity): <galaxy_name>-LR_mom0m.fits Column density: <galaxy_name>-LR_coldens.fits Moment-1 (average velocity): <galaxy_name>-LR_mom1m.fits Moment maps were generated with the SoFiA source finding package. Acknowledgements If you make use of these data products in any publication or presentation, we kindly ask you to cite the following paper(s): Primary HALOGAS reference: Heald et al. (2011) Additional reference for NGC 891: Oosterloo et al. (2007) Additional reference for NGC 2403: Fraternali et al. (2002) and to include the following acknowledgement: This research made use of data from WSRT HALOGAS-DR1. The Westerbork Synthesis Radio Telescope is operated by ASTRON (Netherlands Institute for Radio Astronomy) with support from the Netherlands Foundation for Scientific Research NWO.