10/9 may refer to:

• October 9 (month-day date notation)
• September 10 (day-month date notation)
• 10 shillings and 9 pence in UK predecimal currency

• Grafton, Nh
• Grafton Njootli
• Grafton, NSW
• Grafton, Oxfordshire
• Grafton pond
• Grafton Ponds Natural Area Preserve
• Grafton Post Office (Grafton, Vermont)
• Grafton Preceptory
• Grafton Primary
• Grafton public library
• Grafton Public Library (Grafton, Massachusetts)
• Grafton railway station, Auckland
• Grafton Railway Station, Australia
• Grafton railway station, New South Wales
• Grafton Regis, Northamptonshire
• Grafton (ship)
• Grafton, Shropshire
• Grafton station (MBTA)
• Grafton Street (Dublin)
• Grafton Street School
• Grafton Township
• Grafton Township, Fillmore County, NE
• Grafton Township, Fillmore County, Nebraska
• Grafton Township, Holt County, Nebraska
• Grafton Township, Lorain County, OH