The memorial service to mark the 21st anniversary of the Hillsborough tragedy will be an all-ticket event for the first time.
Ninety-six Liverpool fans were crushed to death on 15 April 1989 at the Hillsborough stadium in Sheffield.
A service is held annually at Anfield, to remember those who lost their lives.
In a statement on its website, Liverpool FC said it had been advised to issue tickets - which will be free - to comply with safety regulations.
Last year, more than 30,000 people turned out for the memorial service, the club said.
'Best way forward'
However it is expecting smaller numbers this year, as in previous years, and will be issuing 10,000 tickets for seats in the Kop stand.
Margaret Aspinall, chair of the Hillsborough Family Support Group, said: "Safety is our absolute priority at the memorial service and we fully support the new arrangements.
"We have worked closely with the club and the authorities to ensure the smooth running of the event and issuing tickets is the best way forward."
Liverpool FC stadium and operations manager Ged Poynton said: "We want everyone who wishes to attend the service to be able to do so, but in the safest possible environment."
He asked people only to apply for tickets if they were certain they would use them. He said there were no plans to alter the service in any way.