Former teammates of the legendary All Black will also be present for the first competitive match the Ospreys have played at the Liberty Stadium since the accident.
Collins' daughter, Ayla, survived and is now receiving ongoing medical attention with Alana's family in Canada. There will be a collection on the day for the Jerry Collins Memorial Fund, with the proceeds going towards a trust for Ayla.
Andrew Hore, Chief Executive of Ospreys Rugby, said: "It has been three months since the sad events in the south of France but JC, Alana and Ayla remain firmly in the thoughts of everybody at the Ospreys, and the rugby community internationally.
"Sunday marks the first opportunity that we have had as a rugby club to honour their memory and to celebrate their life with our supporters. Over the summer it has become clear exactly how highly-regarded JC was by so many people and we wanted to reflect that in our tributes, which will be done in the Ospreys way; understated, sincere and honest.
"We hope to see supporters joining us to pay their own tributes at the Liberty on Sunday 13th September."