Delby' is a bounded rural locality, and cadastral parish, 100 kilometers south of Nyngan, New South Wales. It is located at 32°15′57″S 146°43′29″E on Gunningbar Creek near the junction with the Bogan River and is in Bogan Shire and Flinders County. The locality is south of the town of Nymagee, and west of Tottenham, New South Wales.