Ogilvy and Mather (Australia) Pty Ltd
Ogden Industries Pty Ltd
O’Donnell Griffin Industries Ltd
O’Donnell Brothers Ltd
Odhams Press (Australia) Pty Ltd
O’Conner, T. and Sons Ltd
O’Connell Corporation Ltd
Oceanic Steamship Co Ltd
Oceanic Products Ltd
Ocean Ferries Ltd
Occidental Life Insurance Co (Australia) Ltd
Occidental Hotel
O’Brien, M. and Co Ltd
O’Brien, Frank G. Ltd
Oakes, A. and Sons Ltd
Obbs Industries Ltd
Oamaru Worsted and Woollen Mills Ltd
