Islip may refer to:

• Islip, Northamptonshire
• Islip, Oxfordshire
• Islip Manor Meadows

• Islip, New York, a town in Suffolk County
  • Islip (hamlet), New York, located in the above town
  • Central Islip, New York, a hamlet and census-designated place located in the above town
  • East Islip, New York, a hamlet and census-designated place located in the above town
  • Islip Terrace, New York, a hamlet and census-designated place located in the above town
  • West Islip, New York, a hamlet and census-designated place located in the above town
  • Long Island MacArthur Airport, formerly known as Islip Airport, in the above town

• Mount Islip, a mountain in California

• Islip (surname)
• Islip railway station, Oxfordshire