Objectives
In the Global North, the number of older people living alone who have little or no support from family members is increasing. However, little is known about older people living alone who have basic needs for support but do not have kin living nearby or a sustainable relationship to a relative they can rely on. Thus, this paper focuses on the role of nonkin carers and their contribution to the support arrangements of older people living alone.

Methods
We conducted semistructured interviews with 32 older people living alone aged between 67 and 99 (Ø 84.2 years) in Austria, 23 women, and 9 men. The interviews were analyzed by applying a coding strategy based on grounded theory. In addition, sociograms were created to illustrate relevant relations in each support arrangement.

Results
We identified and characterized 3 groups of nonkins involved in the support arrangements of older people living alone based on the origins of the relationships: (1) friends, (2) neighbors, and (3) acquaintances like members of various communities. The arrangements were classified according to the amount and quality of involvement of nonkin carers, namely manifold, scattered, and little nonkin involvement.

Discussion
Our study highlights the diversity of nonkin support in the support arrangements of older people living alone. This heterogeneity should be considered by policy-makers when promoting informal care and designing policy measures.