A woman in her 50's also suffered serious but not life threatening injuries.
A post mortem will be carried out today on the body of a pensioner killed in a road crash in Co. Laois.
The two car collision happened just after 4 o'clock yesterday on the M7 at Borris-in-Ossory.
The woman who was aged in her 80's died when the car she was driving hit another vehicle.
A woman in her 50's also suffered serious but not life threatening injuries.
Gardaí are appealing for any witnesses to the crash to come forward.

Speed Enforcement To Increase In Kildare With 21 New Camera Zones To Be Rolled Out In January
Over 400 Motorists Caught Speeding So Far Today, Including A Driver In Kilcock
Transport Minister In Discussions With Irish Rail About Extending Late-Night Trains Beyond Christmas
Tadhg And Mary Should Be Looking Forward To Christmas, Say Gardai As Fresh Appeal Launched
Bus Shelters Treated As Luxury Rather Than Standard, With 500 Kildare Bus Stops In Need Of Upgrades
Recruitment Announcements Don’t Add Up As Garda Numbers Stagnant In Kildare South, Says Local TD
Court Orders Demolition Of 29 Unauthorised Modular Homes Built By Kildare Developer
Chris Rea, 'Driving Home For Christmas' Singer, Has Died Aged 74