A Humanist celebrant conducts weddings, funerals, baby namings and other significant life-cycle ceremonies grounded in Humanist values, human dignity, reason, and ethical living without reference to a deity or an afterlife, rather than in the doctrine of any specific religion, a role that has grown substantially as an increasing number of people identifying as non-religious or Humanist have sought ceremonies reflecting their own beliefs and preferring an alternative to either religious officiants or entirely secular civil registrars offering minimal ceremonial content. Training and certification for Humanist celebrants is typically provided by national Humanist organizations, which have developed structured programs covering ceremony writing, public speaking, and the sensitive handling of significant personal and family occasions, alongside grounding in Humanist philosophy itself.
The legal standing of Humanist marriage ceremonies varies considerably by country: some jurisdictions, including Scotland since 2005, have granted Humanist celebrants full legal authority to solemnize marriages on the same basis as religious officiants, while others require a separate civil registration alongside any Humanist ceremony, a patchwork of legal recognition that has been an active subject of Humanist advocacy and, in several countries, ongoing legislative and legal campaigns for equal recognition alongside religious marriage officiants.