The recently published 2MASS all-sky infrared survey (<II/246>) includes JHKs photometry of over 300 million sources. It also provides sizes and aspect ratios for the ~0.55 per cent of objects that appear in the extended-source catalogue. Although most of these detections correspond to galaxies, stars, H II regions, young stellar objects, reflection nebulae and so forth, a number of them also appear to correspond to galactic planetary nebulae (PNe). We have used this survey to determine the near-infrared properties of some 325 known galactic PNe.