A family reunion is an occasion when many members of an extended family congregate. Sometimes reunions are held regularly, for example on the same date of every year.
A typical family reunion will assemble grandparents, great-grandparents and up for a meal, some recreation and discussion. The older attendees are generally grandparents, parents, siblings or first cousins while the youngest could be second, third or fourth cousins. It is also not uncommon for regular family reunions to be sponsored by family organizations or family associations centered on a more distant common ancestor (often referred to as "ancestral family organizations") or a commonly shared surname ("single surname family organizations").
Family reunion programs are sponsored by Red Cross organizations. See the List of Red Cross and Red Crescent Societies. The International Committee of the Red Cross (ICRC) leads the international movement and which has special responsibilities under international humanitarian law.
Many adults using an adoption reunion registry are able to locate parents and siblings. Adoption Reunion groups offer search and support guidance for birth parents and adoptees. Adoption Reunion organizations help to uphold adoptee rights and support adoption reform. According to TRIADOPTION® Library which kept records on adoption search and reunion beginning in the 1970s, Jean Paton formed Orphan Voyage back in 1954 and is considered the grandmother of the adoption reunion movement. ALMA (Adoptees Liberty Movement Association) was formed in New York City in 1972, ISRR (International Soundex Reunion Registry) in 1975, CUB (Concerned United Birthparents) in 1976, and dozens more sprung up around the US, Canada and Australia. By 1985 there were over 500 search and support organizations worldwide. The adoption reunion movement grew rapidly from grass roots local organizations coming together under forming the AAC (American Adoption Congress) in 1979 at a conference held in Washington, DC. Groups from each region were instrumental in finding ways to help their members reunite with their birth families and surrendered/relinquished children.