Age Concern is to host the first national conference that addresses the specific needs of older lesbians and gay men.
The conference, which will include speakers, workshops, a soap-box session and an exhibition, follows the charity's publication of a resource pack on working with older gay people.
Gordon Lishman, Age Concern England's director-general, said: "Age Concern does not claim to be an expert in this field but this conference is a chance to listen to the problems and concerns of older lesbians and gay men.
"We hope that this will impact on the work that we do as a charity as well as encourage other organisations and policy makers to create equal treatment."
Stonewall's executive director Angela Mason described the event as "a major milestone".
She added: "I hope that this conference will also be the beginning of a new coalition between the older community and the gay community."